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i7 1255U Vs i7 1165G7: Our Testing Reveals the Best

Read on as we test the Core i7-1255U and Core i7-1165G7 in performance benchmarks to see which one suits your needs the best.

Expert Verified By

Intel Core i7-1255U

Rated: 9/10

Intel Core i7-1165G7

Rated: 7/10


Pros And Cons

CPUProsCons
Intel Core i7-1255Uโœ… Bigger L2 Cache
โœ… Faster CPU Speeds
โŒ Lower Multiplier Clock
Intel Core i7-1165G7โœ… Higher Multiplier Clock
โœ… Better Single-core Performance
โŒ Lower RAM Speeds

Key Takeaways
  • First off in our Core i7 1255U Vs Core i7 1165G7 comparison, both use Intel’s 10nm node. However, the one used by the Core i7-1255U is more efficient, is called “Intel 7“, and provides 10-15% more performance-per-watt.
  • Regarding performance, the Core i7-1255U performs 41% faster in multi-core applications and 15.5% faster in single-core applications, on average. 
  • Core i7-1165G7 laptops (especially refurbished ones) may be somewhat cheaper than Core i7-1255U laptops. Still, the Core i7-1255U provides much better value due to its better multi-core and single-core performance.
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Core i7 1255U Vs Core i7 1165G7 – Comparison Table 

CPUCore i7-1255UCore i7-1165G7
ArchitectureHybrid Core ArchitectureCypress Cove
CodenameAlder Lake-UTiger Lake-UP3
SocketBGA-1744BGA-1449
Base Clock1.7GHz (P-cores)
Overclocking SupportNoNo
Max Operating Temperature100ยฐC100ยฐC
Price Range~$419 to ~$2068~$439 to ~$4799
Launch DateFebruary 23rd, 2022September 2nd, 2020

Architectural Differences

  • Process NodesAlthough both CPUs use the same 10nm process nodes from Intel, it should be known that the Core i7-1255U features a more improved 10nm node. These 10nm nodes are now called “Intel 7” and provide a 10-15% performance-per-watt improvement. 
  • Core/Thread Counts: The Core i7-1255U features 10 cores, including 2 P-cores and 8 E-cores. In contrast, the Core i7-1255G7 has 4 full-power cores. As for thread counts, the Core i7-1255U takes another win with 12 threads over the 8 of the Core i7-1265G7.
  • Clock SpeedsTalking base clock speeds, the Core i7-1165G7 is configurable between 1.2GHz and 2.8GHz. This configuration depends on the laptop’s cooling design. As for the Core i7-1255U, there is a fixed base frequency of 1.7GHz (P cores) and 1.2GHz (E cores). 
    As for boost clocks, the Core i7-1165G7 can be pushed up to 4.7GHz, the same as the P core boost frequency of the Core i7-1255U. Lastly, the i7-1255U’s E cores can be boosted to 3.5GHz
  • Memory: The difference in memory support between the two chips is that the Core i7-1255U extends support to DDR5 memory. The DDR5 support is up to 4800 MT/s, while the LPPDR5 support is up to 5200 MT/s. Learn about the differences between DDR4 and DDR5 memory in our guide. 
  • Cache: The Core i7-1255U has a lower L1 cache/core capacity (80KB vs 96KB). And while the L2 cache/core amount is the same, the Core i7-1255U has more cores so it ultimately has more total L1 AND L2 cache than the Tiger Lake CPU.
  • TDPAs for thermal design power, the ultra power-efficient i7-1255U has a base TDP configurable between 12 watts and 15 watts. Meanwhile, the Core i7-1165G7 can be configured at up to 28 watts of base power at 2.8GHz. Also, the Core i7 1255U has a boost TDP rating of 55 watts, while the Core i7-1165G7 does not have such a rating.

Intel’s Alder Lake CPUs packed a punch on launch with their revolutionary Hybrid Core Architecture. But how much faster are these CPUs than the previous generation’s Tiger Lake chips? Today, we’re comparing two low-power CPUs from the two generations, in the form of Core i7 1255U Vs Core i7 1165G7, to get an idea.


Performance Benchmarks

Let’s see how the two laptop CPUs compare in performance. We’ll compare their single-core and multi-core scores in three applications to see which CPU is better. 

Cinebench R23

Cinebench R23 (multi-core and single-core)
Cinebench R23 scores (Image by Tech4Gamers)
  • In Cinebench R23, the Core i7-1255U started with 8256 multi-core points. In contrast, the Core i7-1165G7 only scored 6066 points, a 36.1% difference.
  • Moving on to our single-core results, the Core i7-1255U scored 1652, while the Tiger Lake Core i7 scored 1491 points โ€” a comparatively smaller difference of 8.9%.

Geekbench 5

Geekbench 5 (multi-core and single-core)
Geekbench 5 scores (Image by Tech4Gamers)
  • In Geekbench 5, the Intel Core i7-1255U blew the Core i7-1165G7 out of the water with 7317 points. In reply, we witnessed the Core i7-1165G7 scored 4343 points which makes it 68.4% slower. 
  • As for the single-core scores, the Core i7-1255U scored 1631 points, while the Core i7-1165G7 scored 1426 points. Here, the difference is 14.3%.

Passmark

Passmark (multi-core and single-core)
Passmark scores (Image by Tech4Gamers)
  • Lastly, in our Passmark benchmark, the Core i7-1255U continued to show impressive multi-core performance with 13808 points. The Core i7-1165G7 scored 10429 points, trailing by 32.4% this time. 
  • The single-core results saw the Core i7-1255U scoring 3356 points over 2833 points of the Core i7-1165G7. Resultantly, the Core i7-1255U proved 18.4% faster this time. 

Overall Performance

We’ve averaged out the scores across all three applications to get a more accurate overall multi-core and single-core performance result.

Average multi-core and single-core scores
Overall multi-core and single-core performance (Image by Tech4Gamers)
  • Multi-core Performance: The Core i7-1255U scored 9793 points on average, while the Core i7-1165G7 scored 6946 points. Thus, the Core i7-1255U is about 41% faster than the Core i7-1165G7 in multi-core performance. 
  • Single-core Performance: There’s a comparatively smaller difference in single-core scores. The Alder Lake Core i7-1255U scored 2213 points over the 1916 points of the Core i7-1165G7, making it 15.5% faster. 

Prices

Graphics CardMSRPCurrent Price
Core i7-1255U๐Ÿ’ฒ419๐Ÿ’ฒ1199
Core i7-1165G7๐Ÿ’ฒ399๐Ÿ’ฒ945
Price Difference16.155%132.05%

We analyzed that the prices of both laptops ranged between a price difference of 132% at a minimum. The Core i7 116G57 has a very high price as compared to the Core i5 1255U. As the price shoots uncontrollably in the i7 116G57 favor, the users’ opinions may get clouded by the enormous budget set by the processor.


Core i7 1255U Vs Core i7 1165G7 – Which One We Recommend?

Intel Core i7 1255U: We found the Core i7-1255U to be undeniably superior in both multi-core and single-core applications, offering comparable performance within the same price range as the Core i7-1165G7. Thus, the Core i7-1255U takes the crown in terms of price-to-performance ratio.

Intel Core i7 1165G7: As for the i7 1165G7, we analyzed that the Core i7 1165G7 has a similar performance to the Core i7 1255U but it is available at a much higher price than the Core i7 1255U, which ultimately puts the processor behind in terms of budget. 

The Core i7-1255U performs a whopping 41% better in multi-core performance and 15.5% faster in single-core applications. Normally, we think that the Core i7-1255U would be the better option in most scenarios. However, it may be the better option if you find a Core i7-1165G7 laptop for much cheaper than a Core i7-1255U system with similar specifications.


Frequently Asked Questions

Which CPU is newer: Intel Core i7-1255U or Core i7-1165G7?

The Core i7-1255U is the more recent CPU, launching on 23rd February 2022 as part of the Alder Lake lineup. The Core i7-1165G7 launched on 2nd September 2020.

Is the Core i7-1255U more power-efficient than the Core i7-1165G7?

The Core i7-1255U is an “ultra power-efficient” mobile CPU with a base TDP ranging between just 12 watts and 15 watts. So it is the more power-efficient CPU in theory. However, it can draw up to 55 watts of power if thermal headroom is available.

Are new Core i7-1255U laptops cheaper than new Core i7-1165G7 laptops?

No, as the Core i7-1255U laptops range from about $419 to $2068, while Core i7-1165G7 laptops cost between $439 and $4799.


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