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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-6700K @ 4.00GHz vs AMD Ryzen 9 3900X vs AMD Ryzen 9 3900XT

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.

  • 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 i7-6700K @ 4.00GHz×AMD Ryzen 9 3900X×AMD Ryzen 9 3900XT+ ADD
Price $134.99 - BUY $216.99 - BUY $390 - BUY
Socket TypeLGA1151AM4AM4
CPU ClassDesktopDesktopDesktop
Clockspeed4.0 GHz3.8 GHz3.8 GHz
Turbo SpeedUp to 4.2 GHzUp to 4.6 GHzUp to 4.7 GHz
# of Physical Cores4 (Threads: 8)12 (Threads: 24)12 (Threads: 24)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 768KB, L2: 6.0MB, L3: 64MBL1: 768KB, L2: 6.0MB, L3: 64MB
TDP95W105W105W
Yearly Running Cost$17.34$19.16$19.16
Other
First Seen on ChartQ3 2015Q3 2019Q3 2020
# of Samples16272130141158
CPU Value66.1150.583.9
Single Thread Rating(% diff. to max in group)2504(-8.9%)2707(-1.5%)2748(0.0%)
CPU Mark(% diff. to max in group)8928(-72.7%)32657(-0.3%)32740(0.0%)

CPU Mark Rating
As of 27th of April 2024 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
8,928
AMD Ryzen 9 3900X
32,657
AMD Ryzen 9 3900XT
32,740
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 27th of April 2024 - Higher results represent better value
Intel Core i7-6700K @ 4.00GHz
66.1
AMD Ryzen 9 3900X
150.5
AMD Ryzen 9 3900XT
83.9
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 27th of April 2024 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
2,504
AMD Ryzen 9 3900X
2,707
AMD Ryzen 9 3900XT
2,748
PassMark Software © 2008-2024

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 i7-6700K @ 4.00GHzAMD Ryzen 9 3900XAMD Ryzen 9 3900XT
Max TDP95W105W105W
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.