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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 PRO 9945 vs Ryzen 9 7900X3D

The AMD Ryzen 9 PRO 9945 is newer than AMD Ryzen 9 7900X3D is around 12% faster in single-thread testing. Also, AMD Ryzen 9 PRO 9945 uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 2154 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 PRO 9945×AMD Ryzen 9 7900X3D+ ADD
Price Search Online $523.69 - BUY
Socket TypeAM5AM5 (LGA 1718)
CPU ClassDesktopDesktop
Clockspeed3.4 GHz4.4 GHz
Turbo SpeedUp to 5.4 GHzUp to 5.6 GHz
# of Physical Cores12 (Threads: 24)12 (Threads: 24)
CacheL1: 960KB, L2: 12.0MB, L3: 64MBL1: 768KB, L2: 12.0MB, L3: 128MB
TDP65W120W
Yearly Running Cost$11.86$21.90
OtherAMD Radeon GraphicsAMD Radeon Graphics
First Seen on ChartQ3 2025Q1 2023
# of Samples232131
CPU Rank262243
CPU Value0.095.9
Single Thread Rating(% diff. to max in group)4619(0.0%)4121(-10.8%)
CPU Mark(% diff. to max in group)48634(-3.2%)50230(0.0%)

CPU Mark Rating
As of 11th of March 2026 - Higher results represent better performance
AMD Ryzen 9 PRO 9945
48,634
AMD Ryzen 9 7900X3D
50,230
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 11th of March 2026 - Higher results represent better value
AMD Ryzen 9 PRO 9945
NA
AMD Ryzen 9 7900X3D
95.9
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 11th of March 2026 - Higher results represent better performance
AMD Ryzen 9 PRO 9945
4,619
AMD Ryzen 9 7900X3D
4,121
PassMark Software © 2008-2026
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 PRO 9945 AMD Ryzen 9 7900X3D
Max TDP65W120W
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.