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CPU Benchmarks

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Intel i7-5820K vs i5-10400

The Intel Core i5-10400 @ 2.90GHz is newer than Intel Core i7-5820K @ 3.30GHz also around 19% faster in multi-threaded (CPU Mark) testing, it is around 22% faster in single-thread testing. However, Intel Core i5-10400 @ 2.90GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 8023 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 i7-5820K @ 3.30GHz×Intel Core i5-10400 @ 2.90GHz+ ADD
Price $139 - BUY $119.99 - BUY
Socket TypeLGA2011-v3FCLGA1200
CPU ClassDesktopDesktop
Clockspeed3.3 GHz2.9 GHz
Turbo SpeedUp to 3.6 GHzUp to 4.3 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 12)
CacheL1: 384KB, L2: 1.5MB, L3: 15MBL1: 384KB, L2: 1.5MB, L3: 12MB
TDP140W65W
Yearly Running Cost$25.55$11.86
OtherIntel UHD Graphics 630
First Seen on ChartQ3 2014Q2 2020
# of Samples48753148
CPU Value70.8101.0
Single Thread Rating(% diff. to max in group)1993(-22.4%)2568(0.0%)
CPU Mark(% diff. to max in group)9841(-18.8%)12117(0.0%)

CPU Mark Rating
As of 22nd of December 2024 - Higher results represent better performance
Intel Core i7-5820K @ 3.30GHz
9,841
Intel Core i5-10400 @ 2.90GHz
12,117
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 22nd of December 2024 - Higher results represent better value
Intel Core i7-5820K @ 3.30GHz
70.8
Intel Core i5-10400 @ 2.90GHz
101.0
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 22nd of December 2024 - Higher results represent better performance
Intel Core i7-5820K @ 3.30GHz
1,993
Intel Core i5-10400 @ 2.90GHz
2,568
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.
Intel Core i7-5820K @ 3.30GHz Intel Core i5-10400 @ 2.90GHz
Max TDP140W65W
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.