Intel Core i7-6660U vs Intel Xeon E3-1240L v3

Compare Intel 6th Generation Core i7 2 core CPU vs Intel Xeon E3 v3 Family 4 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

27 %
27 %

Gaming Score

The raw gaming performance with a fast GPU

45 %
21% slightly better gaming score
37 %

Multitasking Score

Performance in workloads using up to 8 cores

22 %
24 %
9% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

21 %
23 %
9% slightly better heavy workload score

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Number of physical processing units

100% significantly more cores


Number of logical processing units

100% significantly more threads

Clock Speed

Base frequency at which the chip operates

2 GHz
20% slightly higher clock speed
2 GHz

Turbo Speed

Higher frequency used for heavy workloads

3 GHz
13% slightly higher turbo speed
3 GHz


Thermal Design Power: Measure of heat generated by the CPU

15 W
66% significantly lower TDP
25 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots

33% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access


Supported Memory

Maximum amount of RAM supported by this CPU

32 GiB
32 GiB

Other details


Ranking in the hardwareDB database

660th of 1,326
655th of 1,326


The product line

6th Generation Core i7
Xeon E3 v3 Family

Release date

The official date of release of this chip

February 2016
May 2014

Memory Type

The type of memory used by this chip


Supports ECC memory

Does this CPU support error correcting memory


Core i7-6660U vs Xeon E3-1240L v3 benchmarks

In our benchmarks, the Xeon E3-1240L v3 beats the Core i7-6660U in overall performance. Despite this, the Core i7-6660U has the advantage in our gaming benchmark.

In terms of the number of cores of each of these CPUs, the Xeon E3-1240L v3 has significantly more cores than the Core i7-6660U. Indeed the Xeon E3-1240L v3 has 2 compared to 4 found in the Core i7-6660U. It also has more threads than the Core i7-6660U. These CPUs have different clock speeds. Indeed, the Core i7-6660U has a slightly higher clock speed compared to the Xeon E3-1240L v3. Also, the Core i7-6660U has a slightly higher turbo speed. A Core i7-6660U CPU outputs less heat than a Xeon E3-1240L v3 CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

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 i7-6660U has more threads than cores. Each physical core is split into multiple threads.


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