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Over 1,000,000 CPUs benchmarked

AMD Ryzen 7 7840U vs Ryzen 9 6900HX

The AMD Ryzen 7 7840U is newer than AMD Ryzen 9 6900HX and has comparable multi-threaded (CPU Mark) and single-thread rating. However, AMD Ryzen 9 6900HX uses around 40% more power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 1380 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 7 7840U×AMD Ryzen 9 6900HX+ ADD
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Socket TypeNA2FP7
CPU ClassLaptopLaptop
Clockspeed3.3 GHz3.3 GHz
Turbo SpeedUp to 5.1 GHzUp to 4.9 GHz
# of Physical Cores8 (Threads: 16)8 (Threads: 16)
CacheL1: 512KB, L2: 8.0MB, L3: 16MBL1: 512KB, L2: 4.0MB, L3: 16MB
TDP30W45W
Yearly Running Cost$5.48$8.21
Otherw/ Radeon 780M GraphicsAMD Radeon 680M
First Seen on ChartQ2 2023Q2 2022
# of Samples3031077
CPU Value0.00.0
Single Thread Rating(% diff. to max in group)3604(0.0%)3441(-4.5%)
CPU Mark(% diff. to max in group)25004(0.0%)24755(-1.0%)
2 - Information not available. Do you know? Notify Us.

CPU Mark Rating
As of 1st of December 2024 - Higher results represent better performance
AMD Ryzen 7 7840U
25,004
AMD Ryzen 9 6900HX
24,755
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 1st of December 2024 - Higher results represent better performance
AMD Ryzen 7 7840U
3,604
AMD Ryzen 9 6900HX
3,441
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 7 7840U AMD Ryzen 9 6900HX
Max TDP30W45W
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.