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AMD Ryzen 7 3800XT vs Intel i9-11900KB

The Intel Core i9-11900KB @ 3.30GHz is newer than AMD Ryzen 7 3800XT, while the multi-threaded (CPU Mark) is simliar, Intel Core i9-11900KB @ 3.30GHz is around 15% faster in single-thread testing. However, AMD Ryzen 7 3800XT uses around 47% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 774 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 3800XT×Intel Core i9-11900KB @ 3.30GHz+ ADD
Price $499 - BUY Search Online
Socket TypeAM4FCBGA1787
CPU ClassDesktopDesktop
Clockspeed3.9 GHz3.3 GHz
Turbo SpeedUp to 4.7 GHzUp to 4.9 GHz
# of Physical Cores8 (Threads: 16)8 (Threads: 16)
CacheL1: 512KB, L2: 4.0MB, L3: 32MBL1: 640KB, L2: 10.0MB, L3: 24MB
TDP105W65W
Yearly Running Cost$19.16$11.86
OtherIntel UHD Graphics for 11th Gen Intel Processors
First Seen on ChartQ3 2020Q3 2021
# of Samples68490
CPU Value47.342.6
Single Thread Rating(% diff. to max in group)2803(-15.4%)3313(0.0%)
CPU Mark(% diff. to max in group)23590(0.0%)22940(-2.8%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 1st of March 2025 - Higher results represent better performance
AMD Ryzen 7 3800XT
23,590
Intel Core i9-11900KB @ 3.30GHz
22,940
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 1st of March 2025 - Higher results represent better value
AMD Ryzen 7 3800XT
47.3
Intel Core i9-11900KB @ 3.30GHz
42.6
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 1st of March 2025 - Higher results represent better performance
AMD Ryzen 7 3800XT
2,803
Intel Core i9-11900KB @ 3.30GHz
3,313
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 7 3800XT Intel Core i9-11900KB @ 3.30GHz
Max TDP105W65W
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.