Intel Core i9-7900X vs Intel Core Ultra 7 155H

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

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Specifications
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Intel Core Ultra 7 155H

Price

The cheapest price from our partner retailers

$ 689.95

$ 810.04 significantly less expensive

$ 1499.99

Benchmark Score

Overall Score

A combined score of all workloads

7006 points

7084 points

1% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

7653 points

9220 points

20% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

6778 points

4% slightly better multitasking score

6469 points

Heavy Workload Score

Performance in workloads using up to 16 cores

6719 points

5% slightly better heavy workload score

6362 points

Free CPU Benchmark

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Other Benchmarks

3DMark Physics score

Physics simulation benchmark

6987 points

8% slightly higher 3DMark Physics score

6426 points

Blender score

Cycles Render (Samples per minute)

209.19 points

30% slightly higher Blender score

159.93 points

Specifications

Cores

Number of physical processing units

60% significantly more cores

Threads

Number of logical processing units

10% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.3 GHz

135% significantly higher clock speed

1.4 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.3 GHz

4.8 GHz

11% slightly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

57% 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

128 GiB

33% slightly more supported memory

96 GiB

L3 Cache

General memory pool for all cores

14 MiB

24 MiB

71% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

193rd of 1,089

186th of 1,089

Family

The product line

Core X-series

Core Ultra (Series 1)

Release date

The official date of release of this chip

2017 May

2023 November

Memory Type

The type of memory used by this chip

DDR4-2666

DDR5-7467

Is Unlocked

Can this CPU can be overclocked

Yes

Supports ECC memory

Does this CPU support error correcting memory

Core i9-7900X vs Core Ultra 7 155H comparison

In our benchmarks, the Core i9-7900X beats the Core Ultra 7 155H in overall performance. Despite this, the Core Ultra 7 155H has the advantage in our gaming benchmark.

With info from our database, we find that the Core Ultra 7 155H has significantly more cores with 16 cores whereas the Core i9-7900X has 10 cores. It also has more threads than the Core i9-7900X. With our hardware info, we find that the Core i9-7900X has a significantly higher clock speed than the Core Ultra 7 155H.

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 i9-7900X has more threads than cores. Each physical core is split into multiple threads.