iconcharts
0

CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i7-8700K vs i7-7740X

The Intel Core i7-8700K @ 3.70GHz is newer than Intel Core i7-7740X @ 4.30GHz and is around 41% faster in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Also, 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 16667 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 i7-8700K @ 3.70GHz×Intel Core i7-7740X @ 4.30GHz+ ADD
Price $154.85 - BUY Search Online
Socket TypeFCLGA1151-2FCLGA2066
CPU ClassDesktopDesktop
Clockspeed3.7 GHz4.3 GHz
Turbo SpeedUp to 4.7 GHzUp to 4.5 GHz
# of Physical Cores6 (Threads: 12)4 (Threads: 8)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP95W112W
Yearly Running Cost$17.34$20.44
OtherIntel UHD Graphics 630
First Seen on ChartQ4 2017Q3 2017
# of Samples16446221
CPU Value87.762.2
Single Thread Rating(% diff. to max in group)2721(0.0%)2698(-0.9%)
CPU Mark(% diff. to max in group)13583(0.0%)9637(-29.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 22nd of May 2025 - Higher results represent better performance
Intel Core i7-8700K @ 3.70GHz
13,583
Intel Core i7-7740X @ 4.30GHz
9,637
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 22nd of May 2025 - Higher results represent better value
Intel Core i7-8700K @ 3.70GHz
87.7
Intel Core i7-7740X @ 4.30GHz
62.2
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 22nd of May 2025 - Higher results represent better performance
Intel Core i7-8700K @ 3.70GHz
2,721
Intel Core i7-7740X @ 4.30GHz
2,698
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 i7-8700K @ 3.70GHz 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.