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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i5-8257U @ 1.40GHz vs Intel Core i5-9400H @ 2.50GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.


×Intel Core i5-8257U @ 1.40GHz×Intel Core i5-9400H @ 2.50GHz+ ADD
Price$3201$2501
Socket TypeFCBGA1528FCBGA1440
CPU ClassLaptopLaptop
Clockspeed1.4 GHz2.5 GHz
Turbo SpeedUp to 3.9 GHzUp to 4.3 GHz
# of Physical Cores4 (Threads: 8)4 (Threads: 8)
Max TDP15W45W
Yearly Running Cost$2.74$8.21
First Seen on ChartQ4 2019Q2 2019
# of Samples1472
Cross-Platform Rating1699615698
Single Thread Rating23422523
CPU Mark79458259
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 9th of March 2021 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
 7,945
Intel Core i5-9400H @ 2.50GHz
 8,259
PassMark Software © 2008-2021
CPU Value (CPU Mark / $Price)
As of 9th of March 2021 - Higher results represent better value
Intel Core i5-8257U @ 1.40GHz
 24.83
Intel Core i5-9400H @ 2.50GHz
 33.04
PassMark Software © 2008-2021
CPU Single Thread Rating
As of 9th of March 2021 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
 2,342
Intel Core i5-9400H @ 2.50GHz
 2,523
PassMark Software © 2008-2021

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 i5-8257U @ 1.40GHzIntel Core i5-9400H @ 2.50GHz
Max TDP15W45W
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.