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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-9600 vs i5-8400

The Intel Core i5-9600 @ 3.10GHz is newer than Intel Core i5-8400 @ 2.80GHz and is around 12% faster in multi-threaded (CPU Mark) testing. The Intel Core i5-9600 @ 3.10GHz is around 14% 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 9281 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 i5-9600 @ 3.10GHz×Intel Core i5-8400 @ 2.80GHz+ ADD
Price $129.8 - BUY $98 - BUY
Socket TypeFCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed3.1 GHz2.8 GHz
Turbo SpeedUp to 4.6 GHzUp to 4.0 GHz
# of Physical Cores6 (Threads: 6)6 (Threads: 6)
CacheL1: 384KB, L2: 1.5MB, L3: 9MBL1: 384KB, L2: 1.5MB, L3: 9MB
TDP65W65W
Yearly Running Cost$11.86$11.86
OtherIntel UHD Graphics 630Intel UHD Graphics 630
First Seen on ChartQ3 2019Q4 2017
# of Samples2379044
CPU Rank15181623
CPU Value79.894.2
Single Thread Rating(% diff. to max in group)2700(0.0%)2367(-12.3%)
CPU Mark(% diff. to max in group)10359(0.0%)9231(-10.9%)

CPU Mark Rating
As of 17th of January 2026 - Higher results represent better performance
Intel Core i5-9600 @ 3.10GHz
10,359
Intel Core i5-8400 @ 2.80GHz
9,231
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 17th of January 2026 - Higher results represent better value
Intel Core i5-9600 @ 3.10GHz
79.8
Intel Core i5-8400 @ 2.80GHz
94.2
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 17th of January 2026 - Higher results represent better performance
Intel Core i5-9600 @ 3.10GHz
2,700
Intel Core i5-8400 @ 2.80GHz
2,367
PassMark Software © 2008-2026
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 i5-9600 @ 3.10GHz Intel Core i5-8400 @ 2.80GHz
Max TDP65W65W
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.