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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 Samples559
Cross-Platform Rating1654315099
Single Thread Rating23312536
CPU Mark81918337
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 15th of August 2020 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
 8,191
Intel Core i5-9400H @ 2.50GHz
 8,337
PassMark Software © 2008-2020
CPU Value (CPU Mark / $Price)
As of 15th of August 2020 - Higher results represent better value
Intel Core i5-8257U @ 1.40GHz
 25.60
Intel Core i5-9400H @ 2.50GHz
 33.35
PassMark Software © 2008-2020
CPU Single Thread Rating
As of 15th of August 2020 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
 2,331
Intel Core i5-9400H @ 2.50GHz
 2,536
PassMark Software © 2008-2020

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)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.