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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 3900 vs Ryzen 7 7800X3D

The AMD Ryzen 7 7800X3D is newer than AMD Ryzen 9 3900 also around 10% faster in multi-threaded (CPU Mark) testing, it is around 30% faster in single-thread testing. However, AMD Ryzen 9 3900 uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 9090 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 3900×AMD Ryzen 7 7800X3D+ ADD
Price Search Online $479 - BUY
Socket TypeAM4AM5
CPU ClassDesktopDesktop
Clockspeed3.1 GHz4.2 GHz
Turbo SpeedUp to 4.3 GHzUp to 5.0 GHz
# of Physical Cores12 (Threads: 24)8 (Threads: 16)
CacheL1: 768KB, L2: 6.0MB, L3: 64MBL1: 512KB, L2: 8.0MB, L3: 96MB
TDP65W120W
Yearly Running Cost$11.86$21.90
OtherAMD Radeon Graphics
First Seen on ChartQ4 2019Q2 2023
# of Samples4588632
CPU Value61.171.6
Single Thread Rating(% diff. to max in group)2625(-30.0%)3752(0.0%)
CPU Mark(% diff. to max in group)30804(-10.1%)34275(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 3rd of December 2024 - Higher results represent better performance
AMD Ryzen 9 3900
30,804
AMD Ryzen 7 7800X3D
34,275
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 3rd of December 2024 - Higher results represent better value
AMD Ryzen 9 3900
61.1
AMD Ryzen 7 7800X3D
71.6
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 3rd of December 2024 - Higher results represent better performance
AMD Ryzen 9 3900
2,625
AMD Ryzen 7 7800X3D
3,752
PassMark Software © 2008-2024
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 3900 AMD Ryzen 7 7800X3D
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.