Intel Core i7-9850H vs Intel Core i7-1255U

Compare Intel 9th Generation Core i7 6 core CPU vs Intel 12th Generation Core i7 10 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Benchmark Score

Overall Score

A combined score of all workloads

55 %
57 %
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

75 %
82 %
9% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

49 %
49 %

Heavy Workload Score

Performance in workloads using up to 16 cores

47 %
47 %

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Number of physical processing units

66% significantly more cores


Number of logical processing units


Clock Speed

Base frequency at which the chip operates

3 GHz
52% significantly higher clock speed
2 GHz

Turbo Speed

Higher frequency used for heavy workloads

5 GHz
5 GHz
2% slightly higher turbo speed


Thermal Design Power: Measure of heat generated by the CPU

45 W
15 W
200% significantly lower TDP

PCIe Lanes

Number of physical connections between the CPU and expansion slots

25% slightly more pcie lanes

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

384 KiB
800 KiB
108% significantly more L1 cache

L2 Cache

Secondary embedded memory, slower than L1 cache

2 MiB
4 MiB
166% significantly more L2 cache

L3 Cache

General memory pool for all cores

12 MiB
12 MiB

Other details


Ranking in the hardwareDB database

279th of 1,335
265th of 1,335


The product line

9th Generation Core i7
12th Generation Core i7

Release date

The official date of release of this chip

May 2019
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 i7-9850H vs Core i7-1255U specs and performance

In our benchmarks, the Core i7-1255U beats the Core i7-9850H in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-9850H in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i7-1255U has significantly more cores than the Core i7-9850H. Indeed, the Core i7-1255U has 10 cores compared to 6 cores found in the Core i7-9850H. But they both have the same number of threads. These CPUs have different clock speeds. Indeed, the Core i7-9850H 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 i7-9850H thanks to a 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 i7-9850H. However, both these chips have the same amount of L3 cache.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. Indeed, the Core i7-9850H has more threads than cores. Each physical core is split into multiple threads.


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