CPU Performance Comparison

Performance of selected CPUs can be found below. The values for the CPU are determined from thousands of PerformanceTest benchmark results and is updated daily.

	Intel Core i5-8600K @ 3.60GHz	Intel Core i5-8400 @ 2.80GHz
Price	$312.92¹	$199 BUY NOW!
Socket Type	FCLGA1151	FCLGA1151
CPU Class	Desktop	Desktop
Clockspeed	3.6 GHz	2.8 GHz
Turbo Speed	Up to 4.3 GHz	Up to 4.0 GHz
# of Physical Cores	6	6
Max TDP	95W	65W
Yearly Running Cost	$17.34	$11.86
First Seen on Chart	Q4 2017	Q4 2017
# of Samples	1458	2435
Single Thread Rating	2514	2336
CPU Mark	12759	11647

¹ - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 23rd of July 2019 - Higher results represent better performance
Intel Core i5-8600K @ 3.60GHz	12,759
Intel Core i5-8400 @ 2.80GHz	11,647
Intel Core i9-9900K @ 3.60GHz	20,222
AMD Ryzen 7 2700X	16,971
Intel Core i7-8700K @ 3.70GHz	15,962
Intel Core i7-8700 @ 3.20GHz	15,161
AMD Ryzen 7 1700X	14,680
PassMark Software © 2008-2019

CPU Value (CPU Mark / $Price)
As of 23rd of July 2019 - Higher results represent better value
Intel Core i5-8600K @ 3.60GHz	40.78
Intel Core i5-8400 @ 2.80GHz	58.53
Intel Core i9-9900K @ 3.60GHz	41.70
AMD Ryzen 7 2700X	63.33
Intel Core i7-8700K @ 3.70GHz	45.61
Intel Core i7-8700 @ 3.20GHz	50.54
AMD Ryzen 7 1700X	89.52
PassMark Software © 2008-2019

CPU Single Thread Rating
As of 23rd of July 2019 - Higher results represent better performance
Intel Core i5-8600K @ 3.60GHz	2,514
Intel Core i5-8400 @ 2.80GHz	2,336
Intel Core i9-9900K @ 3.60GHz	2,898
AMD Ryzen 7 2700X	2,191
Intel Core i7-8700K @ 3.70GHz	2,701
Intel Core i7-8700 @ 3.20GHz	2,630
AMD Ryzen 7 1700X	1,881
PassMark Software © 2008-2019

Show other common CPUs in charts

Estimated Energy Usage Cost

Estimated Energy Adjustable Values
Average hours of use per day
Average CPU Utilization (0-100%)¹
Power 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 i5-8600K @ 3.60GHz	Intel Core i5-8400 @ 2.80GHz
Max TDP	95W	65W
Power consumption per day (kWh)	abc	abc
Running cost per day	abc	abc
Power consumption per year (kWh)	abc	abc
Running cost per year	abc	abc

Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.

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