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Over 1,000,000 CPUs benchmarked

Intel i7-7700K vs i5-8600K

The Intel Core i5-8600K @ 3.60GHz is newer than Intel Core i7-7700K @ 4.20GHz and is around 5% faster in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 18169 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 i5-8600K @ 3.60GHz+ ADD
Price Search Online $83.4 - BUY
Socket Type LGA 1151FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.2 GHz3.6 GHz
Turbo SpeedUp to 4.5 GHzUp to 4.3 GHz
# of Physical Cores4 (Threads: 8)6 (Threads: 6)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 384KB, L2: 1.5MB, L3: 9MB
TDP95W95W
Yearly Running Cost$17.34$17.34
OtherIntel UHD Graphics 630
First Seen on ChartQ4 2016Q4 2017
# of Samples143863783
CPU Rank16091562
CPU Value51.0121.6
Single Thread Rating(% diff. to max in group)2704(0.0%)2570(-4.9%)
CPU Mark(% diff. to max in group)9632(-5.0%)10141(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 18th of February 2026 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
9,632
Intel Core i5-8600K @ 3.60GHz
10,141
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 18th of February 2026 - Higher results represent better value
Intel Core i7-7700K @ 4.20GHz
51.0
Intel Core i5-8600K @ 3.60GHz
121.6
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 18th of February 2026 - Higher results represent better performance
Intel Core i7-7700K @ 4.20GHz
2,704
Intel Core i5-8600K @ 3.60GHz
2,570
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 i7-7700K @ 4.20GHz Intel Core i5-8600K @ 3.60GHz
Max TDP95W95W
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.