Intel Core i9-10900X vs Intel Core Ultra 7 255H

Compare Intel Core X-series 10 core CPU vs Intel Core Ultra (Series 2) 16 core processor, specs and benchmark score. Which is the better CPU for gaming?

Benchmark Score
Other Benchmarks
Specifications
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Benchmark Score

Overall Score

A combined score of all workloads

7550 points

7661 points

1% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

8222 points

9595 points

16% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

7324 points

4% slightly better multitasking score

7028 points

Heavy Workload Score

Performance in workloads using up to 16 cores

7249 points

6% slightly better heavy workload score

6834 points

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Other Benchmarks

Blender score

Cycles Render (Samples per minute)

202.00 points

212.94 points

5% slightly higher Blender score

Geekbench 6 (multi) score

Multi threaded benchmark

9481 points

13475 points

42% slightly higher Geekbench 6 (multi) score

Geekbench 6 (single) score

Single threaded benchmark

1574 points

2524 points

60% significantly higher Geekbench 6 (single) score

Specifications

Cores

Number of physical processing units

60% significantly more cores

Threads

Number of logical processing units

25% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.7 GHz

85% significantly higher clock speed

2 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.5 GHz

5.1 GHz

13% slightly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

71% significantly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

100% significantly more memory channels

Supported Memory

Maximum amount of RAM supported by this CPU

256 GiB

100% significantly more supported memory

128 GiB

L3 Cache

General memory pool for all cores

25 MiB

4% slightly more L3 cache

24 MiB

Other details

Rank

Ranking in the hardwareDB database

167th of 1,099

163rd of 1,099

Family

The product line

Core X-series

Core Ultra (Series 2)

Release date

The official date of release of this chip

2019 November

2025 February

Memory Type

The type of memory used by this chip

DDR4-2933

DDR5-8400

Is Unlocked

Can this CPU can be overclocked

Yes

Supports ECC memory

Does this CPU support error correcting memory

Core i9-10900X vs Core Ultra 7 255H benchmarks

According to the hardwareDB Benchmark tool, the Core Ultra 7 255H is faster than the Core i9-10900X. Furthermore, our gaming benchmark shows that it also outperforms the Core i9-10900X in all gaming tests too.

With info from our database, we find that the Core Ultra 7 255H has significantly more cores with 16 cores whereas the Core i9-10900X has 10 cores. Despite this, the Core i9-10900X has more threads than the Core Ultra 7 255H. With our hardware info, we find that the Core i9-10900X has a significantly higher clock speed than the Core Ultra 7 255H. Despite this, the Core Ultra 7 255H has a slightly higher turbo speed.

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 i9-10900X has more threads than cores. Each physical core is split into multiple threads.