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Over 1,000,000 CPUs benchmarked

Intel i7-8700K vs i7-8700

The Intel Core i7-8700 @ 3.20GHz is newer than Intel Core i7-8700K @ 3.70GHz and is around -6% slower in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Also, Intel Core i7-8700K @ 3.70GHz uses around 38% more power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 32826 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 i7-8700 @ 3.20GHz+ ADD
Price $160.57 - BUY $136.17 - BUY
Socket TypeFCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed3.7 GHz3.2 GHz
Turbo SpeedUp to 4.7 GHzUp to 4.6 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP95W65W
Yearly Running Cost$17.34$11.86
OtherIntel UHD Graphics 630Intel UHD Graphics 630
First Seen on ChartQ4 2017Q4 2017
# of Samples1826514561
CPU Rank13161378
CPU Value84.593.6
Single Thread Rating(% diff. to max in group)2716(0.0%)2625(-3.3%)
CPU Mark(% diff. to max in group)13572(0.0%)12746(-6.1%)

CPU Mark Rating
As of 18th of February 2026 - Higher results represent better performance
Intel Core i7-8700K @ 3.70GHz
13,572
Intel Core i7-8700 @ 3.20GHz
12,746
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 18th of February 2026 - Higher results represent better value
Intel Core i7-8700K @ 3.70GHz
84.5
Intel Core i7-8700 @ 3.20GHz
93.6
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 18th of February 2026 - Higher results represent better performance
Intel Core i7-8700K @ 3.70GHz
2,716
Intel Core i7-8700 @ 3.20GHz
2,625
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 i7-8700K @ 3.70GHz Intel Core i7-8700 @ 3.20GHz
Max TDP95W65W
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.