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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i5-9600K @ 3.70GHz vs Intel Core i5-8400 @ 2.80GHz

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

×Intel Core i5-9600K @ 3.70GHz×Intel Core i5-8400 @ 2.80GHz+ ADD
Price$249.99 BUY NOW!$226.13 BUY NOW!
Socket TypeFCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed3.7 GHz2.8 GHz
Turbo SpeedUp to 4.6 GHzUp to 4.0 GHz
# of Physical Cores66
Max TDP95W65W
Yearly Running Cost$17.34$11.86
First Seen on ChartQ4 2018Q4 2017
# of Samples17513298
Single Thread Rating26792331
CPU Mark1353111561

CPU Mark Rating
As of 18th of February 2020 - Higher results represent better performance
Intel Core i5-9600K @ 3.70GHz
13,531
Intel Core i5-8400 @ 2.80GHz
11,561
CPU Value (CPU Mark / $Price)
As of 18th of February 2020 - Higher results represent better value
Intel Core i5-9600K @ 3.70GHz
54.13
Intel Core i5-8400 @ 2.80GHz
51.13
CPU Single Thread Rating
As of 18th of February 2020 - Higher results represent better performance
Intel Core i5-9600K @ 3.70GHz
2,679
Intel Core i5-8400 @ 2.80GHz
2,331

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 i5-9600K @ 3.70GHzIntel Core i5-8400 @ 2.80GHz
Max TDP95W65W
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.