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CPU Benchmarks

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Intel i3-9350KF vs i5-8400T

The Intel Core i3-9350KF @ 4.00GHz is newer than Intel Core i5-8400T @ 1.70GHz, while the multi-threaded (CPU Mark) is simliar, Intel Core i3-9350KF @ 4.00GHz is around 29% faster in single-thread testing. However, Intel Core i5-8400T @ 1.70GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 448 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 i3-9350KF @ 4.00GHz×Intel Core i5-8400T @ 1.70GHz+ ADD
Price $129 - BUY $113.37 - BUY
Socket TypeFCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.0 GHz1.7 GHz
Turbo SpeedUp to 4.6 GHzUp to 3.3 GHz
# of Physical Cores4 (Threads: 4)6 (Threads: 6)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 384KB, L2: 1.5MB, L3: 9MB
TDP91W35W
Yearly Running Cost$16.61$6.39
OtherIntel UHD Graphics 630
First Seen on ChartQ2 2019Q2 2018
# of Samples52396
CPU Value58.765.6
Single Thread Rating(% diff. to max in group)2684(0.0%)1914(-28.7%)
CPU Mark(% diff. to max in group)7570(0.0%)7441(-1.7%)

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i3-9350KF @ 4.00GHz
7,570
Intel Core i5-8400T @ 1.70GHz
7,441
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 2nd of April 2025 - Higher results represent better value
Intel Core i3-9350KF @ 4.00GHz
58.7
Intel Core i5-8400T @ 1.70GHz
65.6
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i3-9350KF @ 4.00GHz
2,684
Intel Core i5-8400T @ 1.70GHz
1,914
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 i3-9350KF @ 4.00GHz Intel Core i5-8400T @ 1.70GHz
Max TDP91W35W
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.