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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i7-7900X vs i7-7820X

The Intel Core i7-7900X @ 3.30GHz is newer than Intel Core i7-7820X @ 3.60GHz also around 18% faster in multi-threaded (CPU Mark) testing but 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 1154 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 i7-7900X @ 3.30GHz×Intel Core i7-7820X @ 3.60GHz+ ADD
Price Search Online Search Online
Socket TypeFCLGA2066FCLGA2066
CPU ClassDesktopDesktop
Clockspeed3.3 GHz3.6 GHz
Turbo SpeedUp to 4.3 GHzUp to 4.3 GHz
# of Physical Cores10 (Threads: 20)8 (Threads: 16)
CacheL1: 512KB, L2: 8.0MB, L3: 14MBL1: 512KB, L2: 8.0MB, L3: 11MB
TDP140W140W
Yearly Running Cost$25.55$25.55
Other
First Seen on ChartQ3 2017Q2 2017
# of Samples121142
CPU Value0.035.1
Single Thread Rating(% diff. to max in group)2455(-2.7%)2524(0.0%)
CPU Mark(% diff. to max in group)21008(0.0%)17148(-18.4%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 13th of March 2025 - Higher results represent better performance
Intel Core i7-7900X @ 3.30GHz
21,008
Intel Core i7-7820X @ 3.60GHz
17,148
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 13th of March 2025 - Higher results represent better value
Intel Core i7-7900X @ 3.30GHz
NA
Intel Core i7-7820X @ 3.60GHz
35.1
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 13th of March 2025 - Higher results represent better performance
Intel Core i7-7900X @ 3.30GHz
2,455
Intel Core i7-7820X @ 3.60GHz
2,524
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 i7-7900X @ 3.30GHz Intel Core i7-7820X @ 3.60GHz
Max TDP140W140W
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.