Core i7 1255U vs Core i5 1335U – We Discovered A Winner

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Ali

As Tech4Gamers’ Comparisons Expert, I bring a wealth of knowledge to the forefront. Specializing in graphics cards and processors, I delve deep into the intricacies of computer technology, regularly sharing insights and in-depth comparisons with the community.

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Pros And Cons

Core i7 1255U Vs Core i5 1335U – Comparison Table

Architectural Differences

1. Processing Nodes: Both the Intel i7 1255U and the Intel i5 1335U are based on a 10nm manufacturing process, which offers identical power efficiency and potential for a similar performance.
2. Clock Speeds: The Core i7-1255U clocks 1.7GHz on the P-cores and 1.2GHz on the E-cores at the base. Conversely, the Core i5-1335U has frequencies of 1.3GHz (P-cores) and 0.9 GHz (E-cores). As for boost speeds, the Core i7-1255U P-cores push up to 4.7GHz and the E-cores up to 3.5GHz. The Core i5-1335U boosts to 4.6GHz (P-cores) and 3.4GHz (E-cores).
3. Cores And Threads: The Intel Core i7 1255U features 2 performance cores and 8 Efficiency cores, paired with 12 threads. On the other hand, the Intel Core i5 1335U has 2 performance cores and 8 efficiency cores, coupled with 12 threads.
4. Memory: The Core i5-1335U improves DDR5 (up to 5200 MT/s over 4800 MT/s) and LPDDR5 (up to 6400 MT/s over 5200 MT/s) support. It also adds LPDDR5x support which the Core i7-1255U does not support. 
5. Cache: The Intel Core i7-1255U has 18MB of shared L3 Cache, while the Core i5-1335U has 12MB of it.

Previously, We compared the Core i7-1255U to the Core i5-1235U and discovered a 12.4% and 5.2% difference in multi-core and single-core performance, respectively. This article will put the slightly upgraded 13th-generation Core i5 to the same Core i7, in Core i7-1255U vs Core i5-1335U. Read on to find out if the Raptor Lake Core i5 stands a better chance.

Performance Benchmarks

I’ve compared the two CPUs in performance in various applications to find the better CPU.

Cinebench R15

• Beginning the proceedings with Cinebench R15, we witness that the Core i5-1335U scores 1494 points in the multi-core test. In response, the Core i7-1255U accumulated 1400 points.
• In the single-core test, the Core i7-1255U led with 238.5 points, while the Core i5-1335U managed 231 points. 

Cinebench R23

• Moving on to Cinebench R23, the Core i5-1335U scored 8349 points, just marginally ahead of the Core i7-1255U’s 8332-point tally.
• As for the single-core scores, the Core i7-1255U leads again with 1656 points over 1625 of the Core i5-1335U.

Geekbench 5

• The next test is Geekbench 5, where the Core i5-1335U bagged another win in our multi-core performance, with 7984 points. In response, the Core i7-1255U scored 7294 points. 
• The single-core results saw the Core i5-1335U scoring 1637 points compared to 1610 of the Core i7-1255U.

Passmark

• In Passmark, we analyzed that the Core i5-1335U notched up 17057 points, leading the Core i7-1255U’s score of 13905 points.
• Regarding single-core scores, the Core i5-1335U’s tally is 3505 points, while the Core i7-1255U’s figures read 3382 points. 

3DMark Time Spy CPU Benchmark

• In the 3DMark Time Spy benchmark, the Core i7-1255U proved superior with 6140 points. In reply, the Core i5-1335U scored 5894 points. In exact, the Core i7-1255U performed 4.1% better.

Blender 3.3 Classroom

• The next benchmark we put to test is the Blender Classroom render, in which we saw that the Core i5-1335U rendered the scene 10 seconds faster than the Core i7-1255U — or 1.4% faster.

HWBOT x265 Benchmark V2.2

• Wrapping up the benchmarks, the Core i7-1255U outscored its Intel Core i5 competitor by just .1 FPS — or 1%.

Overall Performance

Before moving on, we calculated the average for the multi-core and single-core across the four tested applications.

• Multi-core Performance: Overall, the Core i5-1335U accumulated 8721 points while the Core i7-1255U averaged 7597 points. So, on average, the Core i5-1335U is 14.7% faster in multi-core applications.
• Single-core Performance: The Core i5-1335U averaged 1749 points across the four tests, bettering the Core i7-1255U’s score of 1721 points. Thus, the Core i5-1335U is about 1.6% faster than the Core i7-1255U in single-core applications.

Core i7 1255U vs Core i5 1335U – Final Thoughts 

Intel Core i5 1335U: The Core i5-1355U performed 14.7% faster in our multi-core tests and 1.6% faster in the single-core tests. It also won the Blender render test. In the remaining tests, the Core i7-1255U performed better but by a narrow margin.

Intel Core i5 1255U: We experienced that the price gap favors Intel’s Core i7-1255U. Keep in mind its higher power consumption and potential for thermal throttling. Also, note that memory support isn’t as robust as the Core i5-1355U. However, the Core i7-1255U offers a better performance-per-dollar ratio than the Core i5-1335U.

We recommend the Intel Core i5 1335U as it has more potential and memory support than the Core i5 1255U despite having a below-par value. This performance in benchmarks greatly enhances the i5 1335U’s rating.

More From Core i7 1255U:

• Core i7-12700H Vs Core i7-1255U
• Core i7-1255U Vs Core i7-1165G7
• Core i7-1255U Vs Core i5-1235U

More From Core i5 1335U:

• Core i7 1355U Vs Core i5 1335U
• Core i5 1335U Vs Core i5 1135G7
• Core i5-1335U Vs Core i5-1235U

Ali

[Comparisons Expert]

Ali Tauseef is an experienced writer and computer enthusiast with a passion for graphics cards and processors. With a wealth of knowledge in the field of computer technology, he regularly publishes blogs and in-depth comparisons on Tech4Gamers.
Get In Touch: ali@old.tech4gamers.com