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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-8400T vs i5-8400 vs i3-8100

All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 11402 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 i5-8400T @ 1.70GHz×Intel Core i5-8400 @ 2.80GHz×Intel Core i3-8100 @ 3.60GHz+ ADD
Price $113.37 - BUY $151.7 - BUY $49.48 - BUY
Socket TypeFCLGA1151-2FCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktopDesktop
Clockspeed1.7 GHz2.8 GHz3.6 GHz
Turbo SpeedUp to 3.3 GHzUp to 4.0 GHzNot Supported
# of Physical Cores6 (Threads: 6)6 (Threads: 6)4 (Threads: 4)
CacheL1: 384KB, L2: 1.5MB, L3: 9MBL1: 384KB, L2: 1.5MB, L3: 9MBL1: 256KB, L2: 1.0MB, L3: 6MB
TDP35W65W65W
Yearly Running Cost$6.39$11.86$11.86
OtherIntel UHD Graphics 630Intel UHD Graphics 630Intel UHD Graphics 630
First Seen on ChartQ2 2018Q4 2017Q4 2017
# of Samples38473163702
CPU Value65.660.8123.3
Single Thread Rating(% diff. to max in group)1913(-19.5%)2375(0.0%)2209(-7.0%)
CPU Mark(% diff. to max in group)7438(-19.4%)9223(0.0%)6100(-33.9%)

CPU Mark Rating
As of 14th of March 2025 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
7,438
Intel Core i5-8400 @ 2.80GHz
9,223
Intel Core i3-8100 @ 3.60GHz
6,100
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 14th of March 2025 - Higher results represent better value
Intel Core i5-8400T @ 1.70GHz
65.6
Intel Core i5-8400 @ 2.80GHz
60.8
Intel Core i3-8100 @ 3.60GHz
123.3
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 14th of March 2025 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
1,913
Intel Core i5-8400 @ 2.80GHz
2,375
Intel Core i3-8100 @ 3.60GHz
2,209
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 i5-8400T @ 1.70GHz Intel Core i5-8400 @ 2.80GHz Intel Core i3-8100 @ 3.60GHz
Max TDP35W65W65W
Power consumption per day (kWh)NANANA
Running cost per dayNANANA
Power consumption per year (kWh)NANANA
Running cost per yearNANANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.