Intel Xeon Gold 6126 vs Intel Core Ultra 9 285H

Compare Intel Xeon Scalable 12 core CPU vs Intel Core Ultra (Series 2) 16 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

8481 points
10% slightly better overall score
7707 points

Gaming Score

The raw gaming performance with a fast GPU

5942 points
10126 points
70% significantly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

9458 points
36% slightly better multitasking score
6950 points

Heavy Workload Score

Performance in workloads using up to 16 cores

10072 points
49% significantly better heavy workload score
6726 points

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Want to compare your processor against the Xeon Gold 6126 and the Core Ultra 9 285H? Download our free and quick PC Performance Test.

Specifications

Cores

Number of physical processing units

12
16
33% slightly more cores

Threads

Number of logical processing units

24
49% significantly more threads
16

Clock Speed

Base frequency at which the chip operates

2.59 GHz
2.9 GHz
11% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

3.7 GHz
5.4 GHz
45% significantly higher turbo speed

PCIe Lanes

Number of physical connections between the CPU and expansion slots

48
71% significantly more pcie lanes
28

Memory Channels

Lanes for simultaneous memory access

6
200% significantly more memory channels
2

Supported Memory

Maximum amount of RAM supported by this CPU

768 GiB
499% significantly more supported memory
128 GiB

L2 Cache

Secondary embedded memory, slower than L1 cache

24 MiB
28 MiB
16% slightly more L2 cache

L3 Cache

General memory pool for all cores

38.5 MiB
60% significantly more L3 cache
24 MiB

Other details

Rank

Ranking in the hardwareDB database

125th of 1,089
157th of 1,089

Family

The product line

Xeon Scalable
Core Ultra (Series 2)

Release date

The official date of release of this chip

2017 August
2025 February

Memory Type

The type of memory used by this chip

DDR4-2666
DDR5-8400

Supports ECC memory

Does this CPU support error correcting memory

Yes
No

Xeon Gold 6126 vs Core Ultra 9 285H comparison

In our benchmarks, the Xeon Gold 6126 beats the Core Ultra 9 285H in overall performance. Despite this, the Core Ultra 9 285H has the advantage in our gaming benchmark.

With info from our database, we find that the Core Ultra 9 285H has slightly more cores with 16 cores whereas the Xeon Gold 6126 has 12 cores. Despite this, the Xeon Gold 6126 has more threads than the Core Ultra 9 285H. With our hardware info, we find that the Core Ultra 9 285H has a slightly higher clock speed than the Xeon Gold 6126. Also, the Core Ultra 9 285H has a significantly higher turbo speed. In terms of cache, the Core Ultra 9 285H has slightly more L2 cache when compared to the Xeon Gold 6126. Despite this, the Xeon Gold 6126 has significantly more L3 cache compared to the Core Ultra 9 285H.

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 Xeon Gold 6126 has more threads than cores. Each physical core is split into multiple threads.

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