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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 7900 vs Ryzen 7 7700 vs Ryzen 9 3900

All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 4184 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×AMD Ryzen 7 7700×AMD Ryzen 9 3900+ ADD
Price $392 - BUY $298 - BUY Search Online
Socket TypeAM5AM5AM4
CPU ClassDesktopDesktopDesktop
Clockspeed3.7 GHz3.8 GHz3.1 GHz
Turbo SpeedUp to 5.4 GHzUp to 5.3 GHzUp to 4.3 GHz
# of Physical Cores12 (Threads: 24)8 (Threads: 16)12 (Threads: 24)
CacheL1: 768KB, L2: 12.0MB, L3: 64MBL1: 512KB, L2: 8.0MB, L3: 32MBL1: 768KB, L2: 6.0MB, L3: 64MB
TDP65W65W65W
Yearly Running Cost$11.86$11.86$11.86
OtherAMD Radeon GraphicsAMD Radeon Graphics
First Seen on ChartQ1 2023Q1 2023Q4 2019
# of Samples15832102499
CPU Value123.9115.860.9
Single Thread Rating(% diff. to max in group)4141(0.0%)4062(-1.9%)2616(-36.8%)
CPU Mark(% diff. to max in group)48574(0.0%)34511(-29.0%)30713(-36.8%)
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
AMD Ryzen 9 7900
48,574
AMD Ryzen 7 7700
34,511
AMD Ryzen 9 3900
30,713
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 13th of March 2025 - Higher results represent better value
AMD Ryzen 9 7900
123.9
AMD Ryzen 7 7700
115.8
AMD Ryzen 9 3900
60.9
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 13th of March 2025 - Higher results represent better performance
AMD Ryzen 9 7900
4,141
AMD Ryzen 7 7700
4,062
AMD Ryzen 9 3900
2,616
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 AMD Ryzen 7 7700 AMD Ryzen 9 3900
Max TDP65W65W65W
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.