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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-6400 vs i7-7700 vs i7-7700K

All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 26164 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 i5-6400 @ 2.70GHz×Intel Core i7-7700 @ 3.60GHz×Intel Core i7-7700K @ 4.20GHz+ ADD
Price Search Online Search Online $185 - BUY
Socket TypeLGA 1151LGA1151 LGA 1151
CPU ClassDesktopDesktopDesktop
Clockspeed2.7 GHz3.6 GHz4.2 GHz
Turbo SpeedUp to 3.3 GHzUp to 4.2 GHzUp to 4.5 GHz
# of Physical Cores4 (Threads: 4)4 (Threads: 8)4 (Threads: 8)
CacheL1: 256KB, L2: 1.0MB, L3: 6MBL1: 256KB, L2: 1.0MB, L3: 8MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP65W65W95W
Yearly Running Cost$11.86$11.86$17.34
Other
First Seen on ChartQ3 2015Q4 2016Q4 2016
# of Samples5076829712791
CPU Value0.00.052.1
Single Thread Rating(% diff. to max in group)1953(-28.0%)2448(-9.7%)2711(0.0%)
CPU Mark(% diff. to max in group)5170(-46.3%)8644(-10.2%)9631(0.0%)

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i5-6400 @ 2.70GHz
5,170
Intel Core i7-7700 @ 3.60GHz
8,644
Intel Core i7-7700K @ 4.20GHz
9,631
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 2nd of April 2025 - Higher results represent better value
Intel Core i5-6400 @ 2.70GHz
NA
Intel Core i7-7700 @ 3.60GHz
NA
Intel Core i7-7700K @ 4.20GHz
52.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i5-6400 @ 2.70GHz
1,953
Intel Core i7-7700 @ 3.60GHz
2,448
Intel Core i7-7700K @ 4.20GHz
2,711
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 i5-6400 @ 2.70GHz Intel Core i7-7700 @ 3.60GHz Intel Core i7-7700K @ 4.20GHz
Max TDP65W65W95W
Power consumption per day (kWh)NANANA
Running cost per dayNANANA
Power consumption per year (kWh)NANANA
Running cost per yearNANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.