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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-7740X @ 4.30GHz 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 i7-7740X @ 4.30GHz×Intel Core i5-8400 @ 2.80GHz+ ADD
Price$219.95
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$230
BUY NOW!
Socket TypeFCLGA2066FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.3 GHz2.8 GHz
Turbo SpeedUp to 4.5 GHzUp to 4.0 GHz
# of Physical Cores4 (Threads: 8)6 (Threads: 6)
Max TDP112W65W
Yearly Running Cost$20.44$11.86
First Seen on ChartQ2 2017Q4 2017
# of Samples1704403
Cross-Platform Rating1841817615
Single Thread Rating28022410
CPU Mark98099212

CPU Mark Rating
As of 24th of October 2021 - Higher results represent better performance
Intel Core i7-7740X @ 4.30GHz
9,809
Intel Core i5-8400 @ 2.80GHz
9,212
CPU Value (CPU Mark / $Price)
As of 24th of October 2021 - Higher results represent better value
Intel Core i7-7740X @ 4.30GHz
44.60
Intel Core i5-8400 @ 2.80GHz
40.05
CPU Single Thread Rating
As of 24th of October 2021 - Higher results represent better performance
Intel Core i7-7740X @ 4.30GHz
2,802
Intel Core i5-8400 @ 2.80GHz
2,410

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 i7-7740X @ 4.30GHzIntel Core i5-8400 @ 2.80GHz
Max TDP112W65W
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.