Intel Core i5-11400H vs Intel Core i7-1255U

Compare Intel 11th Generation Core i5 6 core CPU vs Intel 12th Generation Core i7 10 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Benchmark Score

Overall Score

A combined score of all workloads

51 %
18% slightly better overall score
43 %

Gaming Score

The raw gaming performance with a fast GPU

75 %
17% slightly better gaming score
64 %

Multitasking Score

Performance in workloads using up to 8 cores

44 %
18% slightly better multitasking score
37 %

Heavy Workload Score

Performance in workloads using up to 16 cores

43 %
22% slightly better heavy workload score
35 %

Free CPU Benchmark

Want to compare your processor against the Core i5-11400H and the Core i7-1255U? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

26% slightly higher Blender score
Cinebench R23 score

Cinebench R23 score

Multi threaded benchmark

12% slightly higher Cinebench R23 score



Number of physical processing units

66% significantly more cores


Number of logical processing units


Clock Speed

Base frequency at which the chip operates

2.69 GHz
58% significantly higher clock speed
1.7 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.5 GHz
4.7 GHz
4% slightly higher turbo speed


Thermal Design Power: Measure of heat generated by the CPU

35 W
15 W
133% significantly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots


Memory Channels

Lanes for simultaneous memory access


Supported Memory

Maximum amount of RAM supported by this CPU

128 GiB
100% significantly more supported memory
64 GiB

L1 Cache

Smallest embedded memory, but the fastest

576 KiB
800 KiB
38% slightly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

7.5 MiB
87% significantly more L2 cache
4 MiB

L3 Cache

General memory pool for all cores

12 MiB
12 MiB

Other details


Ranking in the hardwareDB database

141st of 627
182nd of 627


The product line

11th Generation Core i5
12th Generation Core i7

Release date

The official date of release of this chip

May 2021
February 2022

Memory Type

The type of memory used by this chip


Is Unlocked

Can this CPU can be overclocked


Supports ECC memory

Does this CPU support error correcting memory


Core i5-11400H vs Core i7-1255U comparison

According to the hardwareDB Benchmark tool, the Core i5-11400H is faster than the Core i7-1255U. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-1255U in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i7-1255U has significantly more cores with 10 cores compared to the Core i5-11400H that has 6 cores. But they both have the same number of threads. Our comparison shows that the Core i5-11400H has a significantly higher clock speed compared to the Core i7-1255U. Despite this, the Core i7-1255U has a slightly higher turbo speed. The Core i7-1255U outputs less heat than Core i5-11400H thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Core i5-11400H has significantly more L2 cache when compared to the Core i7-1255U. However, both these chips have the same amount of L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i5-11400H has more threads than cores. Each physical core is split into multiple threads.


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