Intel Xeon E5-2666 v3 vs Intel Core Ultra 7 155U

Compare Intel 10 core CPU vs Intel Core Ultra (Series 1) 12 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Benchmark Score

Overall Score

A combined score of all workloads

4823 points
0.08% slightly better overall score
4819 points

Gaming Score

The raw gaming performance with a fast GPU

5321 points
7087 points
33% slightly better gaming score

Multitasking Score

Performance in workloads using up to 8 cores

4658 points
11% slightly better multitasking score
4161 points

Heavy Workload Score

Performance in workloads using up to 16 cores

4614 points
14% slightly better heavy workload score
4014 points

Free CPU Benchmark

Want to compare your processor against the Xeon E5-2666 v3 and the Core Ultra 7 155U? Download our free and quick PC Performance Test.

Other Benchmarks

Blender score

Blender score

Cycles Render (Samples per minute)

152.03 points
60% significantly higher Blender score
94.95 points

Specifications

Cores

Number of physical processing units

10
12
20% slightly more cores

Threads

Number of logical processing units

20
42% many more threads
14

Clock Speed

Base frequency at which the chip operates

2.90 GHz
38% slightly higher clock speed
2.1 GHz

L2 Cache

Secondary embedded memory, slower than L1 cache

2.5 MiB
10 MiB
300% significantly more L2 cache

L3 Cache

General memory pool for all cores

25 MiB
108% significantly more L3 cache
12 MiB

Other details

Rank

Ranking in the hardwareDB database

363rd of 1,089
364th of 1,089

Family

The product line

-
Core Ultra (Series 1)

Release date

The official date of release of this chip

-
2023 November

Memory Type

The type of memory used by this chip

-
DDR5-7467

Supports ECC memory

Does this CPU support error correcting memory

-
No

Xeon E5-2666 v3 vs Core Ultra 7 155U specs and performance

According to the hardwareDB Benchmark tool, the Xeon E5-2666 v3 is faster than the Core Ultra 7 155U. Despite this, the Core Ultra 7 155U has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that the Core Ultra 7 155U has slightly more cores with 12 cores compared to the Xeon E5-2666 v3 that has 10 cores. Despite this, the Xeon E5-2666 v3 has more threads than the Core Ultra 7 155U. These CPUs have different clock speeds. Indeed, the Xeon E5-2666 v3 has a slightly higher clock speed compared to the Core Ultra 7 155U. The cache sizes of these CPUs are different. Indeed, the Core Ultra 7 155U has significantly more L2 cache than the Xeon E5-2666 v3. Despite this, the Xeon E5-2666 v3 has significantly more L3 cache compared to the Core Ultra 7 155U.

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 E5-2666 v3 has more threads than cores. Each physical core is split into multiple threads.

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