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Core i5-8400H vs i5-12500H


Description
The i5-8400H is based on Coffee Lake architecture while the i5-12500H is based on Alder Lake.

Using the multithread performance as a reference, the i5-8400H gets a score of 195.9 k points while the i5-12500H gets 225.7 k points.

Summarizing, the i5-12500H is 1.2 times faster than the i5-8400H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
906a3
Core
Coffee Lake-H
Alder Lake-H
Architecture
Base frecuency
2.5 GHz
2.5 GHz
Boost frecuency
4.2 GHz
4.5 GHz
Socket
BGA 1440
BGA 1744
Cores/Threads
4/8
12/16
TDP
45 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
4x32/8X64+4x48/8X32 kB
Cache L2
4x256 kB
4x1280/2x2048 kB
Cache L3
8192 kB
18432 kB
Date
April 2018
February 2022
Mean monothread perf.
67.06k points
58.37k points
Mean multithread perf.
195.94k points
225.65k points

AVX2 optimized benchmark
The benchmark in mode III (AVX2), like AVX1, is optimized to used 256 bits registers beside the second version of the Advanced Vector Extensions (AVX). The first AVX2 compatible CPU was released in 2013.
Monothread
i5-8400H
i5-12500H
Test#1 (Integers)
26.51k
22.61k (x0.85)
Test#2 (FP)
23.61k
17.73k (x0.75)
Test#3 (Generic, ZIP)
5.17k
9.63k (x1.86)
Test#1 (Memory)
11.76k
8.4k (x0.71)
TOTAL
67.06k
58.37k (x0.87)

Multithread

i5-8400H

i5-12500H
Test#1 (Integers)
85.52k
85.49k (x1)
Test#2 (FP)
84.4k
94.93k (x1.12)
Test#3 (Generic, ZIP)
19.19k
39.15k (x2.04)
Test#1 (Memory)
6.83k
6.08k (x0.89)
TOTAL
195.94k
225.65k (x1.15)

Performance/W
i5-8400H
i5-12500H
Test#1 (Integers)
1901 points/W
1900 points/W
Test#2 (FP)
1875 points/W
2110 points/W
Test#3 (Generic, ZIP)
426 points/W
870 points/W
Test#1 (Memory)
152 points/W
135 points/W
TOTAL
4354 points/W
5014 points/W

Performance/GHz
i5-8400H
i5-12500H
Test#1 (Integers)
6313 points/GHz
5025 points/GHz
Test#2 (FP)
5622 points/GHz
3939 points/GHz
Test#3 (Generic, ZIP)
1232 points/GHz
2139 points/GHz
Test#1 (Memory)
2800 points/GHz
1867 points/GHz
TOTAL
15967 points/GHz
12971 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4