Intel Core i7-1255U vs Intel Core i5-12450H

Compare Intel 12th Generation Core i7 10 core CPU vs Intel 12th Generation Core i5 8 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

3722 points
5248 points
40% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

5577 points
7843 points
40% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

3201 points
4484 points
40% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

3089 points
4327 points
40% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i7-1255U and the Core i5-12450H? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

75.98 points
113.50 points
49% significantly higher Blender score
Cinebench R23 score

Cinebench R23 score

Multi threaded benchmark

9628 points
5% slightly higher Cinebench R23 score
9134 points

Specifications

Cores

Number of physical processing units

10
25% slightly more cores
8

Threads

Number of logical processing units

12
Identical
12

Clock Speed

Base frequency at which the chip operates

1.7 GHz
2 GHz
17% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

4.7 GHz
6% slightly higher turbo speed
4.4 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

15 W
200% significantly lower TDP
45 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots

20
28
40% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

64 GiB
Identical
64 GiB

L1 Cache

Smallest embedded memory, but the fastest

800 KiB
25% slightly more L1 cache
640 KiB

L2 Cache

Secondary embedded memory, slower than L1 cache

4 MiB
100% significantly more L2 cache
2 MiB

L3 Cache

General memory pool for all cores

12 MiB
Identical
12 MiB

Other details

Rank

Ranking in the hardwareDB database

459th of 1,089
318th of 1,089

Family

The product line

12th Generation Core i7
12th Generation Core i5

Release date

The official date of release of this chip

2022 February
2022 February

Memory Type

The type of memory used by this chip

DDR5-4800
DDR5-4800

Is Unlocked

Can this CPU can be overclocked

No
No

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i7-1255U vs Core i5-12450H comparison

According to the hardwareDB Benchmark tool, the Core i5-12450H 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.

With info from our database, we find that the Core i7-1255U has slightly more cores with 10 cores whereas the Core i5-12450H has 8 cores. But they both have the same number of threads. Our comparison shows that the Core i5-12450H has a slightly higher clock speed compared to the Core i7-1255U. Despite this, the Core i7-1255U has a slightly higher turbo speed. A Core i7-1255U CPU outputs less heat than a Core i5-12450H CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The info from our database shows that the Core i7-1255U has more L2 cache than the Core i5-12450H. 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 i7-1255U has more threads than cores. Each physical core is split into multiple threads.

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