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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.

  • 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 i5-8257U @ 1.40GHz×Intel Core i5-9400H @ 2.50GHz+ ADD
Price Search Online Search Online
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)
CacheL1: 256KB, L2: 1.0MB, L3: 6MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP15W45W
Yearly Running Cost$2.74$8.21
OtherIntel Iris Plus Graphics 645Intel UHD Graphics 630
First Seen on ChartQ4 2019Q3 2019
# of Samples367119
CPU Value23.831.9
Single Thread Rating(% diff. to max in group)2306(-6.6%)2468(0.0%)
CPU Mark(% diff. to max in group)7608(-4.6%)7975(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 6th of December 2023 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
7,608
Intel Core i5-9400H @ 2.50GHz
7,975
PassMark Software © 2008-2023
CPU Value (CPU Mark / $Price)
As of 6th of December 2023 - Higher results represent better value
Intel Core i5-8257U @ 1.40GHz
23.8
Intel Core i5-9400H @ 2.50GHz
31.9
PassMark Software © 2008-2023
CPU Single Thread Rating
As of 6th of December 2023 - Higher results represent better performance
Intel Core i5-8257U @ 1.40GHz
2,306
Intel Core i5-9400H @ 2.50GHz
2,468
PassMark Software © 2008-2023

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.