Intel Core i7-7820X vs Intel Core Ultra 5 125H

Compare Intel Core X-series 8 core CPU vs Intel Core Ultra (Series 1) 14 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

5865 points
5962 points
1% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

7275 points
8201 points
12% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

5393 points
1% slightly better multitasking score
5307 points

Heavy Workload Score

Performance in workloads using up to 16 cores

5258 points
1% slightly better heavy workload score
5169 points

Free CPU Benchmark

Want to compare your processor against the Core i7-7820X and the Core Ultra 5 125H? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

5958 points
0.20% slightly higher 3DMark Physics score
5946 points
Blender score

Blender score

Cycles Render (Samples per minute)

165.28 points
17% slightly higher Blender score
141.11 points

Specifications

Cores

Number of physical processing units

8
14
75% significantly more cores

Threads

Number of logical processing units

16
18
12% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.6 GHz
Identical
3.6 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.3 GHz
4.5 GHz
4% slightly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

28
Identical
28

Memory Channels

Lanes for simultaneous memory access

4
100% significantly more memory channels
2

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

11 MiB
18 MiB
63% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

262nd of 1,089
252nd 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

No
No

Core i7-7820X vs Core Ultra 5 125H comparison

In our benchmarks, the Core Ultra 5 125H beats the Core i7-7820X in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-7820X in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core Ultra 5 125H has significantly more cores with 14 cores compared to the Core i7-7820X that has 8 cores. It also has more threads than the Core i7-7820X. Both the Core i7-7820X and Core Ultra 5 125H have the same clock speed. Despite this, the Core Ultra 5 125H has a slightly higher turbo speed.

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 i7-7820X has more threads than cores. Each physical core is split into multiple threads.

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