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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 3900X vs Ryzen 7 7800X3D

The AMD Ryzen 7 7800X3D is newer than AMD Ryzen 9 3900X, while the multi-threaded (CPU Mark) is simliar, AMD Ryzen 7 7800X3D is around 28% faster in single-thread testing. However, AMD Ryzen 7 7800X3D uses around 13% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 26524 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 3900X×AMD Ryzen 7 7800X3D+ ADD
Price Search Online Search Online
Socket TypeAM4AM5
CPU ClassDesktopDesktop
Clockspeed3.8 GHz4.2 GHz
Turbo SpeedUp to 4.6 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
TDP105W120W
Yearly Running Cost$19.16$21.90
OtherAMD Radeon Graphics
First Seen on ChartQ3 2019Q2 2023
# of Samples1466111863
CPU Value0.00.0
Single Thread Rating(% diff. to max in group)2704(-28.0%)3755(0.0%)
CPU Mark(% diff. to max in group)32576(-4.9%)34264(0.0%)

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
AMD Ryzen 9 3900X
32,576
AMD Ryzen 7 7800X3D
34,264
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
AMD Ryzen 9 3900X
2,704
AMD Ryzen 7 7800X3D
3,755
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 3900X AMD Ryzen 7 7800X3D
Max TDP105W120W
Power consumption per day (kWh)0.210.24
Running cost per day$0.052$0.060
Power consumption per year (kWh)76.687.6
Running cost per year$19.16$21.90
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.