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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-6700K @ 4.00GHz vs Intel Core i7-7700K @ 4.20GHz vs Intel Core i7-8700K @ 3.70GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

×Intel Core i7-6700K @ 4.00GHz×Intel Core i7-7700K @ 4.20GHz×Intel Core i7-8700K @ 3.70GHz+ ADD
Price$269
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$389.98
BUY NOW!
$359.95
BUY NOW!
Socket TypeLGA1151 LGA 1151FCLGA1151-2
CPU ClassDesktopDesktopDesktop
Clockspeed4.0 GHz4.2 GHz3.7 GHz
Turbo SpeedUp to 4.2 GHzUp to 4.5 GHzUp to 4.7 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)6 (Threads: 12)
Max TDP95W95W95W
Yearly Running Cost$17.34$17.34$17.34
First Seen on ChartQ2 2015Q4 2016Q4 2017
# of Samples13663911410586
Cross-Platform Rating168911802726955
Single Thread Rating252827642787
CPU Mark8955970813900

CPU Mark Rating
As of 16th of January 2021 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
8,955
Intel Core i7-7700K @ 4.20GHz
9,708
Intel Core i7-8700K @ 3.70GHz
13,900
CPU Value (CPU Mark / $Price)
As of 16th of January 2021 - Higher results represent better value
Intel Core i7-6700K @ 4.00GHz
33.29
Intel Core i7-7700K @ 4.20GHz
24.89
Intel Core i7-8700K @ 3.70GHz
38.62
CPU Single Thread Rating
As of 16th of January 2021 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
2,528
Intel Core i7-7700K @ 4.20GHz
2,764
Intel Core i7-8700K @ 3.70GHz
2,787

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Core i7-6700K @ 4.00GHzIntel Core i7-7700K @ 4.20GHzIntel Core i7-8700K @ 3.70GHz
Max TDP95W95W95W
Power consumption per day (kWh)abcabcabc
Running cost per dayabcabcabc
Power consumption per year (kWh)abcabcabc
Running cost per yearabcabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.