Intel Core i7-7660U vs Intel Core i7-2600K

Compare Intel 7th Generation Core i7 2 core CPU vs Intel Core 4 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

29 %
30 %
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

48 %
4% slightly better gaming score
46 %

Multitasking Score

Performance in workloads using up to 8 cores

23 %
25 %
8% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

22 %
24 %
9% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i7-7660U and the Core i7-2600K? Download our free and quick PC Performance Test.

Other Benchmarks

Geekbench (multi) score

Multi threaded benchmark

1,977
3,120
57% significantly higher Geekbench (multi) score

Geekbench (single) score

Single threaded benchmark

870
7% slightly higher Geekbench (single) score
808

Specifications

Cores

Number of physical processing units

2
4
100% significantly more cores

Threads

Number of logical processing units

4
8
100% significantly more threads

Clock Speed

Base frequency at which the chip operates

3 GHz
3 GHz
36% slightly higher clock speed

Turbo Speed

Higher frequency used for heavy workloads

4 GHz
5% slightly higher turbo speed
4 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

15 W
533% significantly lower TDP
95 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots

12
16
33% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
Identical
2

Supported Memory

Maximum amount of RAM supported by this CPU

32 GiB
Identical
32 GiB

Other details

Rank

Ranking in the hardwareDB database

614th of 1,326
598th of 1,326

Family

The product line

7th Generation Core i7
Core

Release date

The official date of release of this chip

February 2017
February 2011

Memory Type

The type of memory used by this chip

DDR4-2133
DDR3-1066

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i7-7660U vs Core i7-2600K comparison

In our benchmarks, the Core i7-2600K beats the Core i7-7660U in overall performance. Despite this, the Core i7-7660U has the advantage in our gaming benchmark.

When comparing core counts for these CPUs, we notice that Core i7-2600K has significantly more cores with 2 compared to the Core i7-7660U that has 4. It also has more threads than the Core i7-7660U.

Our database shows that the Core i7-2600K has a slightly higher clock speed than the Core i7-7660U. Despite this, the Core i7-7660U has a slightly higher turbo speed.

A Core i7-7660U CPU outputs less heat than a Core i7-2600K CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

In conclusion, all specs and CPU benchmarks considered, will recommend the Core i7-2600K over the Core i7-7660U.

CPU comparison

Use the table to the left to compare both the Core i7-7660U and the Core i7-2600K, the advantages and disadvantages of each are shown.

CPU rating

Our CPU rating is split into 4 categories: Overall, Gaming, Multitasking and Heavy Workloads. The overall score accesses performance using all CPU cores, gaming prioritises the first six cores, multitasking takes the first eight cores into account and finally heavy workloads are measured using a sixteen-core baseline.

Processor specifications

The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. Indeed, the Core i7-7660U has more threads than cores. Each physical core is split into multiple threads.

Clock speed and Turbo speed are important when comparing per core performance, generally the higher, the better. A higher clock speed may cause a higher TDP, however.

TDP (Thermal Design Power) is a measurement of how much energy is lost as heat when a processor is running. This has an impact on system temperatures. If temperatures get too high (typically around 100 °C or 200 °F), the CPU will lower its performance in order to prevent damage to the chip. Adequate cooling is essential for good performance.

Cache is very fast memory built into the processor. It stores what the CPU is currently working on and anything that doesn't fit is sent to the main system memory, which is slower but more plentiful. It is split into three levels, with Level 1 being the fastest and Level 3 being the slowest. More CPU cache is desirable for high-performance scenarios.

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