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Intel i7-7700K vs i7-7740X

The Intel Core i7-7740X @ 4.30GHz is newer than Intel Core i7-7700K @ 4.20GHz and has comparable multi-threaded (CPU Mark) and single-thread rating. However, Intel Core i7-7740X @ 4.30GHz uses around 16% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 12647 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 i7-7700K @ 4.20GHz×Intel Core i7-7740X @ 4.30GHz+ ADD
Price $144.7 - BUY $100.71 - BUY
Socket Type LGA 1151FCLGA2066
CPU ClassDesktopDesktop
Clockspeed4.2 GHz4.3 GHz
Turbo SpeedUp to 4.5 GHzUp to 4.5 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP95W112W
Yearly Running Cost$17.34$20.44
Other
First Seen on ChartQ4 2016Q3 2017
# of Samples12433214
CPU Value66.795.4
Single Thread Rating(% diff. to max in group)2716(0.0%)2694(-0.8%)
CPU Mark(% diff. to max in group)9645(0.0%)9607(-0.4%)

CPU Mark Rating
As of 15th of January 2025 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
9,645
Intel Core i7-7740X @ 4.30GHz
9,607
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 15th of January 2025 - Higher results represent better value
Intel Core i7-7700K @ 4.20GHz
66.7
Intel Core i7-7740X @ 4.30GHz
95.4
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 15th of January 2025 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
2,716
Intel Core i7-7740X @ 4.30GHz
2,694
PassMark Software © 2008-2025
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 i7-7700K @ 4.20GHz Intel Core i7-7740X @ 4.30GHz
Max TDP95W112W
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.