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AMD Ryzen 9 7900 vs Intel i7-6700K

The AMD Ryzen 9 7900 is newer than Intel Core i7-6700K @ 4.00GHz and is significantly faster in multi-threaded (CPU Mark) testing, it is around 40% faster in single-thread testing. However, Intel Core i7-6700K @ 4.00GHz 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 19014 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.

×AMD Ryzen 9 7900×Intel Core i7-6700K @ 4.00GHz+ ADD
Price $372 - BUY Search Online
Socket TypeAM5LGA1151
CPU ClassDesktopDesktop
Clockspeed3.7 GHz4.0 GHz
Turbo SpeedUp to 5.4 GHzUp to 4.2 GHz
# of Physical Cores12 (Threads: 24)4 (Threads: 8)
CacheL1: 768KB, L2: 12.0MB, L3: 64MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP65W95W
Yearly Running Cost$11.86$17.34
OtherAMD Radeon Graphics
First Seen on ChartQ1 2023Q3 2015
# of Samples175817256
CPU Value130.50.0
Single Thread Rating(% diff. to max in group)4141(0.0%)2505(-39.5%)
CPU Mark(% diff. to max in group)48528(0.0%)8943(-81.6%)

CPU Mark Rating
As of 19th of April 2025 - Higher results represent better performance
AMD Ryzen 9 7900
48,528
Intel Core i7-6700K @ 4.00GHz
8,943
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 19th of April 2025 - Higher results represent better value
AMD Ryzen 9 7900
130.5
Intel Core i7-6700K @ 4.00GHz
NA
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 19th of April 2025 - Higher results represent better performance
AMD Ryzen 9 7900
4,141
Intel Core i7-6700K @ 4.00GHz
2,505
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.
AMD Ryzen 9 7900 Intel Core i7-6700K @ 4.00GHz
Max TDP65W95W
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.