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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-7700K @ 4.20GHz vs Intel Core i7-6800K @ 3.40GHz

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


×Intel Core i7-7700K @ 4.20GHz×Intel Core i7-6800K @ 3.40GHz+ ADD
Price$467.86 BUY NOW!$294.99 BUY NOW!
Socket Type LGA 1151LGA2011-v3
CPU ClassDesktopDesktop
Clockspeed4.2 GHz3.4 GHz
Turbo SpeedUp to 4.5 GHzUp to 3.8 GHz
# of Physical Cores4 (2 logical cores per physical)6 (2 logical cores per physical)
Max TDP95W140W
Yearly Running Cost$17.34$25.55
First Seen on ChartQ4 2016Q2 2016
# of Samples81591382
Single Thread Rating25812067
CPU Mark1199013565

CPU Mark Rating
As of 23rd of January 2020 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
 11,990
Intel Core i7-6800K @ 3.40GHz
 13,565
PassMark Software © 2008-2020
CPU Value (CPU Mark / $Price)
As of 23rd of January 2020 - Higher results represent better value
Intel Core i7-7700K @ 4.20GHz
 25.63
Intel Core i7-6800K @ 3.40GHz
 45.99
PassMark Software © 2008-2020
CPU Single Thread Rating
As of 23rd of January 2020 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
 2,581
Intel Core i7-6800K @ 3.40GHz
 2,067
PassMark Software © 2008-2020

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 i7-7700K @ 4.20GHzIntel Core i7-6800K @ 3.40GHz
Max TDP95W140W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.