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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 3900X vs AMD Ryzen 7 5800X vs Intel Core i7-7700K @ 4.20GHz

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

×AMD Ryzen 9 3900X×AMD Ryzen 7 5800X×Intel Core i7-7700K @ 4.20GHz+ ADD
Price$519
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$309.99
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$395
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Socket TypeAM4AM4 LGA 1151
CPU ClassDesktopDesktopDesktop
Clockspeed3.8 GHz3.8 GHz4.2 GHz
Turbo SpeedUp to 4.6 GHzUp to 4.7 GHzUp to 4.5 GHz
# of Physical Cores12 (Threads: 24)8 (Threads: 16)4 (Threads: 8)
Max TDP105W105W95W
Yearly Running Cost$19.16$19.16$17.34
First Seen on ChartQ2 2019Q4 2020Q4 2016
# of Samples8670452010046
Single Thread Rating272434822730
CPU Mark32748283419661

CPU Mark Rating
As of 21st of May 2022 - Higher results represent better performance
AMD Ryzen 9 3900X
32,748
AMD Ryzen 7 5800X
28,341
Intel Core i7-7700K @ 4.20GHz
9,661
CPU Value (CPU Mark / $Price)
As of 21st of May 2022 - Higher results represent better value
AMD Ryzen 9 3900X
63.10
AMD Ryzen 7 5800X
91.42
Intel Core i7-7700K @ 4.20GHz
24.46
CPU Single Thread Rating
As of 21st of May 2022 - Higher results represent better performance
AMD Ryzen 9 3900X
2,724
AMD Ryzen 7 5800X
3,482
Intel Core i7-7700K @ 4.20GHz
2,730

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.
AMD Ryzen 9 3900XAMD Ryzen 7 5800XIntel Core i7-7700K @ 4.20GHz
Max TDP105W105W95W
Power consumption per day (kWh)NANANA
Running cost per dayNANANA
Power consumption per year (kWh)NANANA
Running cost per yearNANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.