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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i9-7940X vs i7-11700KF

The Intel Core i7-11700KF @ 3.60GHz is newer than Intel Core i9-7940X @ 3.10GHz and is around -6% slower in multi-threaded (CPU Mark) testing. The Intel Core i7-11700KF @ 3.60GHz is around 36% faster in single-thread testing. Also, Intel Core i9-7940X @ 3.10GHz uses around 28% more power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 2202 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Core i9-7940X @ 3.10GHz×Intel Core i7-11700KF @ 3.60GHz+ ADD
Price $272 - BUY $299 - BUY
Socket TypeFCLGA2066FCLGA1200
CPU ClassDesktopDesktop
Clockspeed3.1 GHz3.6 GHz
Turbo SpeedUp to 4.3 GHzUp to 5.0 GHz
# of Physical Cores14 (Threads: 28)8 (Threads: 16)
CacheL1: 896KB, L2: 14.0MB, L3: 19MBL1: 640KB, L2: 4.0MB, L3: 16MB
TDP165W125W
Yearly Running Cost$30.11$22.81
Other
First Seen on ChartQ3 2017Q1 2021
# of Samples4941708
CPU Rank643712
CPU Value93.679.7
Single Thread Rating(% diff. to max in group)2478(-26.4%)3368(0.0%)
CPU Mark(% diff. to max in group)25463(0.0%)23826(-6.4%)

CPU Mark Rating
As of 16th of January 2026 - Higher results represent better performance
Intel Core i9-7940X @ 3.10GHz
25,463
Intel Core i7-11700KF @ 3.60GHz
23,826
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 16th of January 2026 - Higher results represent better value
Intel Core i9-7940X @ 3.10GHz
93.6
Intel Core i7-11700KF @ 3.60GHz
79.7
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 16th of January 2026 - Higher results represent better performance
Intel Core i9-7940X @ 3.10GHz
2,478
Intel Core i7-11700KF @ 3.60GHz
3,368
PassMark Software © 2008-2026
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
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 i9-7940X @ 3.10GHz Intel Core i7-11700KF @ 3.60GHz
Max TDP165W125W
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.