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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-3930K @ 3.20GHz 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 i7-3930K @ 3.20GHz×Intel Core i5-8400 @ 2.80GHz+ ADD
Price$350
BUY NOW!		$109.99
BUY NOW!
Socket TypeLGA2011FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed3.2 GHz2.8 GHz
Turbo SpeedUp to 3.8 GHzUp to 4.0 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 6)
Max TDP130W65W
Yearly Running Cost$23.73$11.86
First Seen on ChartQ4 2011Q4 2017
# of Samples34604854
Single Thread Rating(% diff. to max in group)1762(-26.7%)2404(0.0%)
CPU Mark(% diff. to max in group)8252(-10.7%)9240(0.0%)

CPU Mark Rating
As of 7th of July 2022 - Higher results represent better performance
Intel Core i7-3930K @ 3.20GHz
 8,252
Intel Core i5-8400 @ 2.80GHz
 9,240
PassMark Software © 2008-2022
CPU Value (CPU Mark / $Price)
As of 7th of July 2022 - Higher results represent better value
Intel Core i7-3930K @ 3.20GHz
 23.58
Intel Core i5-8400 @ 2.80GHz
 84.01
PassMark Software © 2008-2022
CPU Single Thread Rating
As of 7th of July 2022 - Higher results represent better performance
Intel Core i7-3930K @ 3.20GHz
 1,762
Intel Core i5-8400 @ 2.80GHz
 2,404
PassMark Software © 2008-2022

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 i7-3930K @ 3.20GHzIntel Core i5-8400 @ 2.80GHz
Max TDP130W65W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.