Intel Core i7-8700K vs Intel Xeon E5-2666 v3

Compare Intel 8th Generation Core i7 6 core CPU vs Intel 10 core processor, specs and benchmark score. Which is the better CPU for gaming?

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Specifications
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Benchmark Score

Overall Score

A combined score of all workloads

5126 points

6% slightly better overall score

4823 points

Gaming Score

The raw gaming performance with a fast GPU

7099 points

33% slightly better gaming score

5321 points

Multitasking Score

Performance in workloads using up to 8 cores

4495 points

4658 points

3% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

4348 points

4614 points

6% slightly better heavy workload score

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Other Benchmarks

3DMark Physics score

Physics simulation benchmark

5074 points

5% slightly higher 3DMark Physics score

4806 points

Blender score

Cycles Render (Samples per minute)

126.15 points

152.03 points

20% slightly higher Blender score

Specifications

Cores

Number of physical processing units

66% significantly more cores

Threads

Number of logical processing units

66% significantly more threads

Clock Speed

Base frequency at which the chip operates

3.7 GHz

27% slightly higher clock speed

2.90 GHz

L2 Cache

Secondary embedded memory, slower than L1 cache

1.5 MiB

2.5 MiB

66% significantly more L2 cache

L3 Cache

General memory pool for all cores

12 MiB

25 MiB

108% significantly more L3 cache

Other details

Rank

Ranking in the hardwareDB database

351st of 1,118

379th of 1,118

Family

The product line

8th Generation Core i7

Release date

The official date of release of this chip

2017 November

Memory Type

The type of memory used by this chip

DDR4-2666

Is Unlocked

Can this CPU can be overclocked

Yes

Supports ECC memory

Does this CPU support error correcting memory

Core i7-8700K vs Xeon E5-2666 v3 comparison

Our benchmark analysis concludes that the Core i7-8700K performs better than the Xeon E5-2666 v3. Furthermore, our gaming benchmark shows that it also outperforms the Xeon E5-2666 v3 in all gaming tests too.

With info from our database, we find that the Xeon E5-2666 v3 has significantly more cores with 10 cores whereas the Core i7-8700K has 6 cores. It also has more threads than the Core i7-8700K. Our comparison shows that the Core i7-8700K has a slightly higher clock speed compared to the Xeon E5-2666 v3. The cache sizes of these CPUs are different. Indeed, the Xeon E5-2666 v3 has significantly more L2 cache than the Core i7-8700K. The Xeon E5-2666 v3 also has significantly more L3 cache.

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 i7-8700K has more threads than cores. Each physical core is split into multiple threads.