Ryzen 9 9900X Vs Ryzen 9 7900X [We Tested Both In 2024]

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Uzair Qureshi

At Tech4Gamers, I proudly wear the title of Comparisons Specialist. Focused on CPUs and GPUs, I bring forth a wealth of hands-on experience and a keen eye for detail to provide our audience with the latest insights and analyses.

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Pros And Cons

Comparison Table

Architectural Differences

1. Process Node & TDP: The newer Ryzen 9 9900X comes with a 4nm process node and a TDP rating of 120W. Whereas the Ryzen 9 7900X has a 5nm node with a 170W TDP. 
2. Cores & Threads: Both of these processors arrive with 12 cores and 24 threads. 
3. Clock Speed: Although new, the Ryzen 9 9900X consists of a 4.4 GHz frequency while the Ryzen 9 7900X boasts a 4.7 GHz speed. Both can be sped up to 5.6 GHz. 
4. Cache: The Ryzen 9 9900X vs Ryzen 9 have an L1 cache of 80KB and 64KB (per core), respectively. Both share the same L2 and L3 cache of 1MB and 64MB, respectively.
5. Chipsets: The Ryzen 9 7900X supports only X670E, X670, B650E, B650. Conversely, the Ryzen 9 9900X supports all of these and also X870E, X870, B850, and B840.

AMD has released four variants of the Ryzen 9000 Series, so we decided to put one of its variants up against one of the strongest variants present in the Ryzen 7000 series. We’ll compare the Ryzen 9 9900X vs Ryzen 9 7900X and take you along.

Gaming Benchmarks – 1080p

Since it’s easier to judge the performance of two processors at 1080p, it is reasonable to test them at 1080p. Most of these games run on the Ultra settings, with some titles pushing the RTX to its full limits. Using the following bench can get you similar results. 

Test Bench

• OS – Windows 11 
• RAM – Teamgroup T-Force Xtreem 48GB DDR5-8200 CL38
• CPU Cooler:  Arctic Liquid Freezer III 360 A-RGB
• Graphics Card – RTX 4090
• SSD – Netac NV7000 2TB PCIe Gen4x4 NVMe
• Power Supply – Enermax PlatiGemini 1200W Platinum

Cyberpunk 2077

• The Ryzen 9 9900X pushes for an average FPS of 122, getting a 1.65% boost, while the Ryzen 9 7900X stays right behind it by achieving an average of 120 FPS.
• As for the 1% lows, the Ryzen 9 9900X showed a 6.8% lead, gaining an average of 91 FPS over the Ryzen 9 7900X, which averaged 85 FPS.

Starfield

• In Starfield, we saw that the Ryzen 9 9900X maintained a lead by a margin of 3.2% as it obtained an average of 127 FPS over the Ryzen 9 7900X’s 123 FPS.
• In terms of the 1% lows, the Ryzen 9 7900X was 7.8% behind with 61 FPS. Whereas the Ryzen 9 9900X stayed ahead with an average of 66 FPS.

Horizon Forbidden West

• Here, we saw the Ryzen 9 9900X with an average of 204 FPS and the Ryzen 9 7900X averaging 201 FPS, stalling only 1.4% behind its competitor.
• The Ryzen 9 9900X rose at the top on an average of 1%, low by 2% as it achieved 145 FPS over the Ryzen 9 7900X, which obtained 142 FPS.

The Witcher 3

• With RTX On, the Ryzen 9 7900X pushed to achieve an average of 97 FPS over the Ryzen 9 9900X’s 98 FPS, being only 1% behind.
• This time, the average 1% lows favored the Ryzen 9 7900X by 5%, which achieved 81 FPS over the newly released Ryzen 9 9900X, which averaged 77 FPS.

Forza Horizon 5

• Again, we saw similar results as the Ryzen 9 7900X pushed for an average of 255 FPS over the Ryzen 9 9900X’s 256 FPS – with only an insignificant difference of 0.3%.
• The Ryzen 9 7900X outperformed the Ryzen 9 9900X by 1.1% by obtaining an average of 180 FPS over 9900X’s 178 FPS.  

Microsoft Flight Simulator

• In this 2020 game, the Ryzen 9 9900X vs Ryzen 9 7900X obtained a similar average of 64 FPS and 62 FPS, respectively, equating to a 3.1% difference.
• The Ryzen 9 9900X dominated the Ryzen 9 7900X by 11.3% by achieving 56 FPS over Ryzen 9 7900X’s 50 FPS. 

Hogwarts Legacy

• The Ryzen 9 9900X outperformed the Ryzen 9 7900X by 3.9% as it gained 77 FPS. Whereas, the Ryzen 9 7900X obtained an average of 74 FPS.
• In terms of the average 1% lows, the Ryzen 9 9900X and the Ryzen 9 7900X obtained 58 FPS and 55 FPS, respectively, – showcasing a 5.3% margin

Red Dead Redemption 2

• Lastly, we saw that both the Ryzen 9 9900X and the Ryzen 9 7900X achieved the same average of 171 FPS.
• With Ryzen 9 7900X is only 3.6% behind in terms of 1% lows, averaging 135 FPS over Ryzen 9 9900X’s slightly better 140 FPS.

Overall Gaming Performance

The Ryzen 9 9900X displayed a slight edge of 1.4% over the Ryzen 9 7900X, which isn’t much of a difference when it comes to the average FPS. As for the 1% lows, there’s only a 2.7% margin gained by the Ryzen 9 9900X.

Thermal Efficiency

The difference between the Ryzen 9 9900X vs Ryzen 9 7900X is only 3.3%, whereas the Ryzen 9 9900X maintains a slightly lower temperature. On a grand scale, this is insignificant because it doesn’t affect the processors at all.

Power Consumption

In terms of power consumption, we saw that the Ryzen 9 9900X consumed about 5.3% less power than the Ryzen 9 7900X. Even if the percentage figure is larger than that of the average FPS and of the temperature, it isn’t much whatsoever.

Price And Availability

Since the Ryzen 9 9900X has recently been released, its current price remains the same as its launch price. The Ryzen 9 7900X, on the other hand, has seen a 52.9% price drop since its release and is also 44% cheaper than the Ryzen 9 9900X.

Editor`s Note

Even though the price of the Ryzen 9 9900X seems unjustified given that the Ryzen 9 7900X managed to push for similar performance, I recommend you wait a few months so that its price decreases. Then, it’ll be worth more than the Ryzen 9 7900X.

– Uzair Qureshi

What We Recommend

Ryzen 9 9900X: This processor rules in terms of average FPS, consumes less power, and runs at a relatively lower temperature than its rival. Since it is new, its price is higher, but it will drop in a few months, which would make it the ideal choice, especially for gamers.

Ryzen 9 7900X: Although this CPU was behind in each aspect, it is still the best option out of the two. This is because there is not much difference in performance, power, and temperature.

Given the advantages and disadvantages of each processor, we would still recommend you to purchase the Ryzen 9 7900X because it is very reasonably priced and performs similarly to the Ryzen 9 9900X, making it the best choice for you. 

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Uzair Qureshi

[Comparisons Specialist]

I’m a passionate computer hardware expert specializing in CPUs and GPUs. With a lifelong curiosity for hardware and extensive hands-on experience, I provide valuable insights, practical advice, and in-depth analysis on these components. Engaging with the hardware community, I exchange knowledge and stay at the forefront of technological advancements.

Get In Touch: uzair@tech4gamers.com