Intel and AMD have been at odds since the dawn of modern-day computers. Likewise, both companies are also the most famous when it comes to computer processors. In addition, AMD makes discrete graphics cards as well. Meanwhile, recently, AMD launched its first 3D V-Cache-based processor, which rivals Intel’s top-of-the-line CPU. Today, let’s talk about the i9-12900K vs Ryzen 7-5800X3D.

While the Ryzen 7-5800X3D is newer than the i9-12900K, it is still the same Ryzen 7 5800X. Simply put, another chip is on top of the main processor chip. In short, we call that a 3D V-Cache chip. On the other hand, we call this technique of stacking chips vertically “3D stacking”.

Furthermore, this 3D V-Cache doubles the L3 Cache in the processor. With this in mind, how does a weaker processor defeat the top varsity? Above all, we shall check that out with the i9-12900K vs Ryzen 7-5800X3D benchmark tests. Although, before that, we should look at both processors’ specifications.

Specifications of the i9-12900K vs Ryzen 7-5800X3D

Before we fight over which processor is better, let’s look at the specs of the 12900K and 5800X3D.

i9-12900K vs Ryzen 7-5800X3D
CPU Name i9-12900K Ryzen 7 5800X3D
Product Line Intel i9 series Ryzen 7 series
Product Generation Intel 12th Generation AMD Ryzen 5000 Generation
Core Architecture Hybrid Core Architecture Zen 3
Processing Node TSMC 10nm TSMC 7nm
Socket FCLGA 1700 AM4
Motherboard Chipset Support Z690, H670, B660, H610 X570, B550, X470, B450, A520, A320
Number of Cores (Threads) 8P (16), 8E (8) = 16 (24) 8 (16)
L2 Cache 14 MB 4 MB
L3 Cache 30 MB 96 MB
Base Clock Speeds 3.20 GHz for P-Cores, 2.40 GHz for E-Cores 3.40 GHz
Boost Clock Speeds 5.20 GHz for P-Cores, 3.90 GHz for E-Cores 4.50 GHz
Base Power Draw 125W 105W
Boost Power Draw 241W N/A
Integrated Graphics Intel UHD Graphics 770 N/A
Memory Support DDR4 up to 3200 MHz, DDR5 up to 4800 MHz DDR4 up to 3200 MHz
PCIe Support PCIe 4.0 & PCIe 5.0 PCIe 4.0
Launch Price $669 $449
Current Price $598 $648
Launch Date November 4, 2021 April 20, 2022

Therefore, the biggest differences between the i9-12900K & Ryzen 7-5800X3D are the L3 Cache and processor nodes. Nevertheless, we shall discuss most of these meticulous details.

Differences Between the i9-12900K vs Ryzen 7-5800X3D

The i9-12900K and Ryzen 7-5800X3D are in contrast to each other. When one processor has lesser cores and threads, its L3 Cache is off the charts. Similarly, whilst one processor had a greater launch price, it currently costs less than the other. Also, there are several architectural differences between the 12900K and 5800X3D.

Hybrid Architectural Design

Although AMD is usually the more “creative” brand, Intel has made a comeback once again. On the contrary, Zen 3, albeit impressive, did not match Intel’s 12th gen. The performance uplift is due to Intel’s new hybrid architectural design processors. To explain, Intel put two different CPU cores in a single chip. Subsequently, we know these cores as Performance (P) cores and Efficiency (E) cores. On the other hand, AMD’s Zen 3 processors have a single core in the chip.

Performance Cores

To summarize, performance cores are the main cores in Intel’s Alder Lake CPUs. Above all, they are complete cores utilizing Intel’s next-gen Golden Cove microarchitecture. After using the 14nm process node for a long time, Intel finally shifted to the 10nm architecture. However, temperatures and power issues have spiked higher than going down.

Then again, Intel has done a fine job with these performance cores as they give a decent boost in IPC. Especially when compared with their 11th gen counterparts. To conclude, these performance cores utilize ARM’s big.LITTLE technology.

Efficiency Cores

Intel’s efficiency cores make the 12th gen a gem in itself. In contrast to the performance cores, these are smaller cores using Intel’s Gracemont microarchitecture. Moreover, the E-cores are weaker but more power-efficient. In addition, they are also present in four clusters while each E-core supports a single thread. Even so, E-cores do not support hyperthreading, yet, they are amazing for tasks requiring single threads.

Using E and P-cores, you can have two computers in one. Even though it does require some optimization, you can set E-cores only to utilize the iGPU. Meanwhile, the P-cores will only utilize the discrete graphics card in your system. As a result, this is an excellent selling point for Intel which AMD does not meet so far.

3D V-Cache

Overall, the Ryzen 7-5800X3D is the first processor to come with 3D V-Cache. Even though it’s a technology that exists to some extent, AMD is the first to have perfected it so far. Whereas 3D V-Cache, in all its glory, allows for vertical chip stacking without using any physical wires. The 3D V-Cache chip is simply a huge chunk of L3 Cache.

What does this do? Naturally, the amount of time the CPU needs to read all of that L3 Cache reduces significantly. Therefore, you will notice much faster response times in games and higher FPS. However, if we’re talking about computational tasks, the 3D V-Cache does not help at all. Most importantly, L3 Cache helps games load maps and render images faster. In short, 3D stacking is an amazing concept. Subsequently, you can see significant performance uplifts by simply putting a small chip on top of the main CPU.

Related Article: Ryzen 7 5800X3D vs Ryzen 9 5900X

DDR5 RAM Compatibility

The concept of DDR5 RAM should not be new at this point. Especially since DDR5’s reveal in late 2020. Intel’s Alder Lake processors are the first to adopt this new RAM. Of course, the i9-12900K is not an exception. Moreover, DDR5 RAM helps 12th gen processors beat the Ryzen 5000 series in multiple game benchmarks. Whereas the improvement in RAM also allows for more uses in heavy computational tasks. 

Because the Ryzen 7 5800X3D is a Zen 3 processor, it’s not compatible with DDR5 RAM. Also, we already know that Ryzen processors adore greater RAM at faster speeds. So, speculating that DDR5 RAM will positively affect Ryzen is not far from the equation.

To begin with, DDR5 has multiple advantages over DDR4 RAM, as it should. Firstly, each stick of DDR5 RAM supports up to 64GB of RAM. That goes against DDR4’s 16GB per stick. Secondly, DDR5 RAM runs at a minimum frequency of 4800MHz against DDR4’s 2133MHz. Thirdly, the new RAM type uses two 32-bit channels to reduce the latency over the old single 64-bit channel. Overall, DDR5 RAM is amazing. But due to its impulsive nature and ridiculous prices, we still prefer DDR4. Not to mention, you need to change your entire system to be DDR5 compatible.

PCIe Gen 5.0 in i9-12900K vs Ryzen 7-5800X3D

In light of PCIe 4.0 being redundant when it first came out, PCIe 5.0 is in a similar state. Currently, there are neither any graphics cards nor any storage devices that use PCIe Gen 5.0. Did this stop Intel from getting PCIe Gen 5.0 in their Alder Lake processors? Definitely not! Presently, PCIe Gen 5.0 will not improve any form of performance. Neither on the graphics side nor the processor side. Then again, who dislikes a new feature? Likewise, is there any need for PCIe 5.0 in today’s world? No, still, is it neat? Absolutely!

Notwithstanding, the Ryzen 7 5800X3D processor, amongst the other Zen 3 processors, does not support PCIe 5.0. Despite this, does it affect performance? To clarify, our answer is the same, not at all! In the same vein, motherboards that support DDR5 RAM and PCIe Gen 5.0 are extremely expensive. In our eyes, it’s simply a waste of money to get something when you can’t see a difference in performance. You may also read Motherboards For Ryzen 7 5800X3D which are based on DDR4.

Power Consumption

Earlier, we pressed this topic slightly. Let’s break it down a bit more. As we already discussed, the 12900K is two computers in one, except that the E-cores still require too much power. Subsequently, it is to the point where, even at base settings, the processor thinks it is overvolting itself. So, in summary, the 12900K is better when undervolted. It sounds ridiculous, but true, nonetheless. Here is a video by the famous tech Youtuber, JayzTwoCents, who explains why undervolting the 12900K is essential.

While, if we discuss the Ryzen 7 5800X3D, it has almost no power issues at all. Rather, the processor requires a meager amount of 125W of power at base clocks. During boost clocks, however, the power requirements can jump up to 170-175W. In contrast, this is good against the 12900K’s “apparent” 241W.

Thermal Differences

When it comes to checking processors’ temperatures, we need to consider a lot of things. For instance, the cooler you’re using. Fans within the case. The chassis itself for better airflow. Whether you’re going with air or water cooling or the quality of the CPU cooler you’re using, amongst others, these are just a few examples of what determines the temperatures within a computer.

Another factor that determines temperatures is the power draw of a processor. In light of this statement, it must be clear that the i9-12900K runs extremely hot. Basically, this processor simply cannot operate properly with air cooling. Assessing its thermal dynamics, at idle, the 12900K has temperatures within 33C-35C which are respectable. That quickly changes under load when the i9-12900K crosses the 80C-85C threshold.

On the other hand, the Ryzen 7 5800X3D, wins this war easily. Whether looking at i9-12900K vs Ryzen 7-5800X3D or another Intel vs Ryzen competition regarding thermals, Ryzen barely ever loses. Simply at idle temperatures, the Ryzen 7 5800X3D stays in the low 30s bracket. Under load, it gets up to a trickle above 60C, at most. Thus, there is almost no thermal throttling in the 5800X3D. The 5800X3D does not require a tremendous amount of cooling, either.

Even if the i9-12900K has a thermal headroom of up to 95C, under load, it is almost crossing those temperatures. In short, the lower the temperatures, the longer your processor will sustain its boost clocks. In addition, we call this phenomenon thermal throttling.

Pricing and Availability

No matter what the performance is like, in the end, everything comes down to price. Similarly, if a good product has bad pricing, most people will tend to avoid it. Whereas, if a bad product has proper pricing, people might consider buying it. As a result, in that regard, the i9-12900K vs Ryzen 7-5800X3D go head-to-head.

While the i9-12900K’s launch price falls at $669, technically speaking, the Ryzen 7 5800X3D is cheaper at $449. That is not the case in the current world scenario, though, with the 5800X3D costing more.

Going from $449, the Ryzen 7 5800X3D, costs $648 — $20 cheaper than the i9-12900K at launch. On the other hand, Intel’s i9-12900K currently costs $598, a nice $80 less than its initial launch price.

Related Article: Intel i7-12700K vs Ryzen 7 5800X

i9-12900K vs Ryzen 7-5800X3D Gaming Performance

To properly analyze two pieces of hardware, the best way to do it is through performance benchmarks. Because the Ryzen 7 5800X3D’s purpose is to conquer the gaming community, we’ll check the gaming performances of both processors. Testing Games have conducted the following benchmark tests.

Test Rig for the i9-12900K

  • CPU: Core i9-12900K
  • Motherboard: MSI MPG Z690 Force
  • RAM: XPG Lancer 32 GB DDR5 5200 MHz
  • CPU Cooler: NZXT Kraken Z Series Z73
  • GPU: GeForce RTX 3090 Ti 24 GB
  • Power Supply: Corsair RM850i 850W
  • Storage: Samsung 970 EVO M.2 2280 1TB x2
  • Resolution: 1080P

Testing PC for the Ryzen 7 5800X3D

  • CPU: Ryzen 7 5800X3D
  • Motherboard: ASUS ROG X570 Crosshair VIII Hero
  • RAM: G.Skill Trident Z 32 GB DDR4 3800 MHz
  • CPU Cooler: NZXT Kraken Z Series Z73
  • GPU: GeForce RTX 3090 Ti 24 GB
  • Power Supply: Corsair RM850i 850W
  • Storage: Samsung 970 EVO M.2 2280 1TB x2
  • Resolution: 1080P

Due to both processors having different sockets, the motherboard is different in both rigs. Other than that, the i9-12900K build uses DDR5 RAM, while the Ryzen 7 5800X3D build isn’t. Then again, there are no other differences between the rigs whatsoever. You may read our Motherboard For i9-12900k guide for more information.

For the GPU, the RTX 3090Ti will honor itself to reduce all GPU and CPU bottlenecks. As for cooling, the NZXT Kraken Z Series Z73 360mm AIO will be more than enough to keep both systems cool.

All things considered, 850W of power will be plenty to run both systems without any problems. Lastly, 2 TB of NVMe M.2 storage will ensure there are no read/write delays.

Red Dead Redemption 2

Red Dead Redemption performance for i9-12900K vs Ryzen 7-5800X3D
Red Dead Redemption 2 performance with i9-12900K vs Ryzen 7-5800X3D. Source: YT/Testing Games

To begin with, let’s talk about the famous game, Red Dead Redemption 2. Consequently, we see almost similar FPS through both processors. To compare, the Ryzen 7 5800X3D is merely five frames ahead of the i9-12900K. That amounts to the 5800X3D being ~3.08% faster than the i9-12900K.

In terms of temperatures and wattage, there’s a greater difference. While the 5800X3D is the faster processor, it requires less power and doesn’t get hot. At the most, we see temperatures of 58C, whereas the 12900K is topping at 65C. Although not necessarily bad, these temperatures cannot be justified for a processor that has lost.

For wattage, the i9-12900K is draining about 108W of power. On the other hand, the Ryzen 7 5800X3D is only draining 97W. To conclude, the 5800X3D performs better whilst draining less power at lower temperatures. That is at least the case for Red Dead Redemption 2, which is notorious for being a CPU-heavy game.

Another important piece of information to look at are the latency timings. In light of 3D V-Cache, we can see the technology shine by giving a response rate of 4.1ms. Meanwhile, the 12900K showcases a response rate of 5.9ms which is almost 50% slower than the 5800X3D.

Hitman 3

Hitman 3 performance for i9-12900K vs Ryzen 7-5800X3D
Hitman 3 performance with i9-12900K vs Ryzen 7-5800X3D

Hitman 3, since its dawn, has been a game that requires more threads to function adequately. Even though the Ryzen 7 5800X3D is not far away, it has lost against the i9-12900K this time. Presently, the 5800X3D shows 216 average FPS and the 12900K, 222. To emphasize, the i9-12900K is ~2.77% faster than the Ryzen 7 5800X3D in Hitman 3.

Due to the 5800X3D having a lower number of threads (16), losing against a thread-intensive game is impertinent. The 12900K boasts 24 threads, 16 from its performance cores and eight from its efficiency cores.

Now, looking at the temperatures and wattage of both processors, we see that the 5800X3D is in the lead. TSMC’s 7nm process node indeed knows how to handle temperatures properly. We cannot say the same for Intel’s 12900K, however. With an average temperature of 61C, the i9-12900K is 6C hotter than the Ryzen 7 5800X3D.

Surprisingly, wattage for both processors in Hitman 3 is oddly similar. When the 12900K runs at 95W, the 5800X3D runs at 94W. By all means, there is no difference in the power drainage of both processors.

Lastly, it is important to talk about response rates as well. In addition, even through 3D V-Cache, the Ryzen 7 5800X3D has lost against the i9-12900K. Notwithstanding, this loss does signify that the 12900K is not a processor we should look down on. Notably, the 12900K has a faster response rate of 4.8ms, and the 5800X3D has a response rate of 5.1ms. The difference might be vague, but it exists nonetheless.

Player’s Unknown Battlegrounds (PUBG)

Player's Unknown Battlegrounds performance for i9-12900K vs Ryzen 7-5800X3D
Player’s Unknown Battlegrounds performance with i9-12900K vs Ryzen 7-5800X3D

Player’s Unknown Battlegrounds (PUBG) is a single-core-dependent game. Although Intel processors have amazing single-core performance, the 12900K has lost this time. Again, there is not a huge difference in FPS between both processors, but it does exist. Subsequently, the Ryzen 7 5800X3D has an average of 234 FPS, and the i9-12900K has an average of 228 FPS. In short, this is a meager ~2.63% increase against Intel’s flagship processor.

For a change, the i9-12900K runs cooler than the Ryzen 7 5800X3D. While the difference may only be by 1C, it is still amazing for the 12900K. Having said that, it is imperative to realize that Intel’s 12900K is an amazing processor.

Similarly, in terms of wattage, the 12900K surprises us again. By showcasing lower wattage than the 5800X3D, the 12900K is more efficient in PUBG. A 75W to 62W differential explains why the Ryzen 7 5800X3D is running hotter too. Despite the overhaul, temperatures are relatively similar for the Ryzen 7-5800X3D vs i9-12900k processors.

Finally, response times are extremely important in shooter games. Likewise, the faster you register your clicks, the better you can play the game. Above all, Ryzen’s 3D V-Cache helps in achieving just that. This time, the Ryzen 7 5800X3D has a faster response time than the i9-12900K. Then again, with the former giving 4.7ms and the latter 5.0ms, it’s clear how 3D V-Cache improves gaming.

Horizon Zero Dawn

Horizon Zero Dawn performance for i9-12900K vs Ryzen 7-5800X3D
Horizon Zero Dawn performance with Ryzen 7-5800X3D vs i9-12900k

Firstly, Horizon Zero Dawn is an extremely CPU-intensive game. To the point where even the strongest processors can lose their ground with this game. Oddly, the i9-12900K and Ryzen 7 5800X3D fare equally in this test.

On one hand, the 12900K averages 197 FPS; on the other, the 5800X3D shows 198 FPS. There is practically no difference in performance between both processors, and it seems they are on equal grounds.

Inspecting the temperatures, they are, again, not too far apart. To clarify, with the i9-12900K faring at 59C, the NZXT Kraken Z73 is a capable AIO. The Ryzen 7 5800X3D is a little bit cooler, at 56C. Even though the 5800X3D wins in temperatures, the difference is not comparable.

Furthermore, let’s look at the wattage differences between the i9-12900K vs Ryzen 7-5800X3D. All things considered, the 12900K performed better than expected initially. Although, the 5800X3D has taken the win again with 104W of power consumption against the 12900K’s 111W. Lower temperatures are most likely the reason why the 5800X3D is also cooler than the 12900K in this test.

To summarize, we shall see the response times for the i9-12900K and the Ryzen 7 5800X3D. At one end, we’re witnessing a never-before-seen architecture in action. On the other, we’re seeing a hybrid processor. But which one ends up victorious? The simple answer is that it’s more or less a tie. However, the more complex answer is that the 5800X3D has a 4.4ms while the 12900K has a 4.5ms response time. Would you be able to spot the difference? Probably not. Does the 5800X3D still have faster response times? Definitely!

Cyberpunk 2077

Cyberpunk 2077 performance for i9-12900K vs Ryzen 7-5800X3D
Cyberpunk 2077 performance with Ryzen 7-5800X3D & i9-12900k

After delaying the game for many years, CD Projekt Red has finally given gamers cyberpunk 2077. While the game and the graphics may be amazing, the requirements to run it are just as demanding.

Provided that, the i9-12900K seems to be the go-to processor for cyberpunk 2077 with an overwhelming 162 FPS. In contrast, the Ryzen 7 5800X3D has an average of 140 FPS. These differences imply that the i9-12900K has a ~15.71% FPS increment, at least in cyberpunk 2077.

Moreover, looking at temperatures, the 5800X3D wins the stage this time. With an aggregate of 58C against the 12900K’s 75C, the 5800X3D shows Zen 3’s capabilities. Roughly speaking, Ryzen’s temperatures are ~22.66% lesser than Intel’s. Although the 12900K has greater FPS, maybe with lower temperatures, it would be a much better processor.

In addition, let’s glance towards the power consumed by both the i9-12900K & Ryzen 7-5800X3D. As expected, the 5800X3D uses less wattage than the 12900K. Notwithstanding, the former utilizes 103W, and the latter consumes 139W of power. The wattages are probably the main reason there is such a big temperature difference. If we undervolt the 12900K, its temperatures will naturally fall, along with performance.

Lastly, the i9-12900K has an extremely lower response timing than the Ryzen 7 5800X3D. Furthermore, we see differentials of 6.7ms for 12900K and 9.1ms for 5800X3D.

Why this happens remains a mystery to us. Then again, maybe cyberpunk 2077 does not read data the same way as most other games. That’s the wildest guess we can throw out there.

Witcher 3

Witcher 3 performance for i9-12900K vs Ryzen 7-5800X3D
Witcher 3 performance with i9-12900K & Ryzen 7-5800X3D

Even though its release was in 2015, Witcher 3 is still viable today with its intense CPU and GPU requirements. Many modern processors and graphic cards still cannot run the game. Despite this, the i9-12900K averages around 225 FPS while the Ryzen 7 5800X3D at 228 FPS. Once again, the 3D V-Cache helps the Zen 3-based processor win against its competition by 3 FPS.

Temperature-wise, there is a slight increase for the 12900K. The 5800X3D, however, is still pretty chill even through 11% more CPU usage. Once more, this kind of temperature control is possible only through Zen 3’s architecture.

Subsequently, beating Ryzen processors in terms of temperature and wattage efficiency is an extremely difficult thing to do for Intel.

Similarly, after temperatures, it’s now time to look at the power consumption of both processors. There is only a slight difference, but the 12900K still consumes more power than the 5800X3D. It is simply by a total of 4 watts. Even though the 5800X3D takes 82W, the 12900K is eating 86W of power.

As always, in the end, let’s glance at the latency of the AMD Ryzen 7-5800X3D vs Intel Core i9-12900k. Unlike CD Projekt Red’s previous game (cyberpunk 2077), the Witcher 3 seems to support 3D V-Cache. At least on a more cellular level. For the 5800X3D, we see about 4.0ms response times, whereas the 12900K shows 4.9ms.

Certainly, as you may already know, you can’t spot any differences between either response time. Nonetheless, it doesn’t take away from the fact that 3D stacking is helping out on the gaming end of things.

Death Stranding

Death Stranding performance 

All things considered, like all open-world games which require a lot of CPU power, death stranding is not an exception. Then again, this 2019-released game had a majority of the processors barely running the game. Basically, what else can you expect from a 526-mile-long world map? Still, the 12900K averages at 207 FPS and the 5800X3D averages at 225 FPS. In short, the Ryzen 7 5800X3D stomps the i9-12900K by a ~8.69% increase in FPS throughout the entire benchmark test.

Moving on to temperatures, the 5800X3D is still cooler than the 12900K by a slight margin. Along with an 8.7% performance uplift, the Ryzen 7 5800X3D is also 7C colder. If this doesn’t show 3D stacking’s capabilities, we’re not too sure what can.

Anyhow, after temperatures, let’s glance at both processors’ wattage. Firstly, we have the i9-12900K with 131W of power. Secondly, we have the Ryzen 7 5800X3D with 106W of power. Even through lesser power draw, the 5800X3D somehow managed to be faster and more efficient than the 12900K.

Lastly, we have the response times for both the hybrid design processor and the 3D stacking one too. Because the 5800X3D keeps latencies low, naturally, it’s going to be faster. However, the 12900K isn’t too far off, especially considering how it’s technically a “previous gen” processor. The 5800X3D performs remarkably with a 3.9ms average, and the 12900K gives 4.3ms. 

Microsoft Flight Simulator

Microsoft Flight Simulator performance

Above all, an extremely demanding and heavy game of all time, Microsoft Flight Simulator is part of the test too. Provided that how big the world map truly is, it’s not a surprise any ordinary processors can’t compete. Altogether, even for the i9-12900K and Ryzen 7 5800X3D, there is almost no difference between the processors in performance. Consequently, the 12900K averages 132 FPS, and the 5800X3D averages 131 FPS.

Having said that, in comparison, the temperatures are pretty much the same for the 12900K and 5800X3D. Even though the Ryzen 7 5800X3D is cooler at 53C, when the difference is 1C, you can’t tell the difference. Somehow or another, the 12900K has finally learned how to be cooler.

On the other hand, the 12900K has lower power consumption for once. Although we don’t know how this is possible, the i9-12900K shows 59W power consumption. And the Ryzen 7 5800X3D shows power consumption of 71W. In other benchmark tests, it’s usually the opposite.

Finally, let’s glance at the latencies of the 12900K and the 5800X3D. Firstly we see the 12900K at about 7.7ms response time and the 5800X3D at 7.1ms. Secondly, it’s almost impossible to even differentiate between either latency due to how close they are. To conclude, people usually don’t understand the market gimmick regarding response times and buy similar processors. It would be amazing if more people knew what can turn into a gimmick.

Forza Horizon 5

Forza Horizon 5 performance with i9-12900K & Ryzen 7-5800X3D. 

The Forza Horizon franchise has remained a hit racing game in the community for a long time. That is to say, after Forza Horizon 5 made its debut, we quickly learned how the game was CPU-thread intensive. Although, for the most part, you only need a great GPU to run the game. With this in mind, the i9-12900K has an average of 275 FPS, and the Ryzen 7 5800X3D with 263 FPS.

Moreover, there is not much of a difference in temperatures for both processors. Provided that, at one end, we see 50C by the 5800X3D. On the other, we see 55C by the 12900K. As a result, we can forgive these 5 Celsius for the ~4.56% performance boost the 12900K comes with.

Moving forward, the core wattage of both processors isn’t too far off from each other. While the 12900K has a higher wattage of 85W, the 5800X3D has a similar wattage of 83W. In conclusion, these 2 watts may also be the reason for the higher temperatures on the 12900K.

Finally, looking at the response times for the 12900K and 5800X3D, they are extremely similar. Despite the Ryzen 7 5800X3D having faster latency timings, the i9-12900K isn’t far down the road. Maybe this is due to the massive number of threads the 12900K comes with that it can generate such performance. Then again, the 5800X3D shows 3.5ms latency, and the 12900K shows 3.7ms latency timings.

Days Gone

Days Gone performance

The last one for this benchmark test, Days Gone, is famous as a single-core intensive game. Consequently, that’s where the i9-12900K vs Ryzen 7-5800X3D comes in. With an average of 193 FPS, the 12900K takes the lead, but the 5800X3D isn’t too far off with 188. At most, we’re seeing a slight 5 FPS difference which doesn’t amount to much.

Talking about temperatures, it seems that the 12900K is almost as cool as the 5800X3D. However, you’ll notice that the usage for the 5800X3D is greater than that of the 12900K. The temperatures satiate that the Zen 3 processor still has greater cooling capabilities. But the i9-12900K isn’t doing a bad job in itself either. Overall, the 12900K gives a 63C average temperature, and the 5800X3D has an average of 60C.

Again, moving on to the wattage side of things, there isn’t much of a disparity. In contrast, the 12900K varies at 87W, and the 5800X3D comes out at 85W. The following wattage differential is likely why the 12900K is 3 Celsius hotter. Although, it also represents that the Ryzen 7 5800X3D is more power and temperature efficient.

In the end, let’s look at the latency timings of the 12900K and 5800X3D. Firstly, there is a massive gap between both processors regarding latency in the Days Gone game test. Secondly, as you can see, there is a tremendous ~44.3% latency difference. With the 12900K going as high as 8.8ms, the 5800X3D goes as low as 4.9ms. Throughout the test, the 5800X3D has won on the architectural side but lost in performance. Simply because the i9-12900K’s single-core performance is exceptional.

Which processor Wins the i9-12900K vs Ryzen 7-5800X3D Battle?

To sum up, according to the benchmarks we conducted at 1080P, the 12900K is faster. Even though by only an insignificant ~0.63%, the performance uplift is there. On average, both processors were nearly showing identical FPS except for a few games. Adding the FPS for the i9-12900K & Ryzen 7-5800X3D, the former has 2003 frames while the latter has 1990. Therefore, there is simply a gap of 13 frames in a total of 10 games.

On the other hand, if we look at latency, which the 3D V-Cache is mainly for, there’s a wider gap. In total, the Ryzen 7 5800X3D has a lower latency by about ~9.92% when compared to the i9-12900K.

To conclude, if you play shooter games, the faster latency will be of use. However, if you simply care about raw performance and single-core tasks, then the 12900K is for you.

Intel i9-12900K vs Ryzen 7-5800X3D in 1440P

Generally speaking, when we tend to stress test a processor, we use a smaller resolution. Furthermore, this increases CPU tasks and reduces GPU tasks, stressing the processor to its limits. Now, when we increase the resolution, CPU tasks will come to a halt, and GPU tasks will increase.

Similarly, in bigger resolutions such as 1440P and 4K, the processor isn’t going to affect your gaming performance as much. It will, however, make your games stutter less.

If we look at cyberpunk 2077, for example, the 12900K at 1080P gave 162 FPS, and the 5800X3D gave 140. Concurrently, the same game, at 1440P, gives 95 FPS on the 12900K and 83 on the 5800X3D. What we see here is not only a decrease in overall FPS but a decrease in the differential FPS too. From a total of 22 lesser frames, the 5800X3D now only has 12 frames less than the 12900K.

In light of these FPS differences, we can understand that you become less CPU-bound and GPU-bound at higher resolutions. Thus, resulting in an FPS drop but a more stable FPS overall.

Intel i9-12900K vs Ryzen 7-5800X3D in 4K

All things considered, only a few pieces of hardware can currently handle 4K. There is a greater number on the processor side, but only a few around the GPU side. Subsequently, two such processors are the i9-12900K and the Ryzen 7 5800X3D.

As we explained previously, the higher you climb the resolution tier, the lesser a processor will affect FPS. Presently, 4K is the highest resolution size you can go to for gaming. Although, we are expecting 8K to make its debut soon with RX 7000 series and RTX 4000 series graphics cards.

The greatest problem in 4K is that you can bottleneck your GPU with a weaker and older processor. While this issue isn’t prevalent in the 5800X3D and the 12900K, it’s still worth talking about. Rather, the extra L3 Cache helps out the 5800X3D to get a few extra frames.

Overall, if you’re using your processor for single-core tasks, we recommend you go for the 12900K. Otherwise, going with the 5800X3D is also an amazing option. Despite that, it’s best to choose a cheaper processor as both have similar performance.

Who is the i9-12900K vs Ryzen 7-5800X3D Article For?

Firstly, the i9-12900K & Ryzen 7-5800X3D Comparison article is for those looking to upgrade to either of the processors. Secondly, the article delves into the architecture of both processors. For instance, descriptions for 3D stacking, problems with the 12900K, and how useful DDR5 RAM is. In addition, we test both processors in a total of 10 games and try to understand which processor is better. Lastly, we look at the 12900K’s and 5800X3D’s 1440P and 4K performance.

Related: Ram For i9-12900k

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