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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i9-11900K vs i9-11900KB

The Intel Core i9-11900KB @ 3.30GHz is newer than Intel Core i9-11900K @ 3.50GHz and is around -9% slower in multi-threaded (CPU Mark) testing. The Intel Core i9-11900KB @ 3.30GHz is around -6% slower in single-thread testing. Also, Intel Core i9-11900KB @ 3.30GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 3648 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.

×Intel Core i9-11900K @ 3.50GHz×Intel Core i9-11900KB @ 3.30GHz+ ADD
Price $429.95 - BUY Search Online
Socket TypeFCLGA1200FCBGA1787
CPU ClassDesktopDesktop
Clockspeed3.5 GHz3.3 GHz
Turbo SpeedUp to 5.2 GHzUp to 4.9 GHz
# of Physical Cores8 (Threads: 16)8 (Threads: 16)
CacheL1: 640KB, L2: 4.0MB, L3: 16MBL1: 640KB, L2: 10.0MB, L3: 24MB
TDP125W65W
Yearly Running Cost$22.81$11.86
OtherIntel UHD Graphics for 11th Gen Intel Processors
First Seen on ChartQ1 2021Q3 2021
# of Samples3544104
CPU Value58.342.4
Single Thread Rating(% diff. to max in group)3510(0.0%)3315(-5.6%)
CPU Mark(% diff. to max in group)25052(0.0%)22836(-8.8%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 14th of June 2025 - Higher results represent better performance
Intel Core i9-11900K @ 3.50GHz
25,052
Intel Core i9-11900KB @ 3.30GHz
22,836
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 14th of June 2025 - Higher results represent better value
Intel Core i9-11900K @ 3.50GHz
58.3
Intel Core i9-11900KB @ 3.30GHz
42.4
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 14th of June 2025 - Higher results represent better performance
Intel Core i9-11900K @ 3.50GHz
3,510
Intel Core i9-11900KB @ 3.30GHz
3,315
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.
Intel Core i9-11900K @ 3.50GHz Intel Core i9-11900KB @ 3.30GHz
Max TDP125W65W
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.