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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

AMD Ryzen 9 3900XT vs Ryzen 7 7700X

The AMD Ryzen 7 7700X is newer than AMD Ryzen 9 3900XT also around 9% faster in multi-threaded (CPU Mark) testing, it is around 35% faster in single-thread testing. 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 6850 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 3900XT×AMD Ryzen 7 7700X+ ADD
Price Search Online $272.91 - BUY
Socket TypeAM4AM5
CPU ClassDesktopDesktop
Clockspeed3.8 GHz4.5 GHz
Turbo SpeedUp to 4.7 GHzUp to 5.4 GHz
# of Physical Cores12 (Threads: 24)8 (Threads: 16)
CacheL1: 768KB, L2: 6.0MB, L3: 64MBL1: 512KB, L2: 8.0MB, L3: 32MB
TDP105W105W
Yearly Running Cost$19.16$19.16
OtherAMD Radeon Graphics
First Seen on ChartQ3 2020Q4 2022
# of Samples13105540
CPU Value100.5131.5
Single Thread Rating(% diff. to max in group)2746(-34.5%)4193(0.0%)
CPU Mark(% diff. to max in group)32653(-9.0%)35890(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 26th of February 2025 - Higher results represent better performance
AMD Ryzen 9 3900XT
32,653
AMD Ryzen 7 7700X
35,890
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 26th of February 2025 - Higher results represent better value
AMD Ryzen 9 3900XT
100.5
AMD Ryzen 7 7700X
131.5
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 26th of February 2025 - Higher results represent better performance
AMD Ryzen 9 3900XT
2,746
AMD Ryzen 7 7700X
4,193
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 3900XT AMD Ryzen 7 7700X
Max TDP105W105W
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.