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Core i5-10400T vs i5-8400


Description
The i5-10400T is based on Comet Lake architecture while the i5-8400 is based on Coffee Lake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i5-8400 gets 317.3 k points.

Summarizing, the i5-8400 is 1 times faster than the i5-10400T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
906ea
Core
Comet Lake-S
Coffee Lake-S
Architecture
Base frecuency
2 GHz
2.8 GHz
Boost frecuency
3.6 GHz
4 GHz
Socket
FC-LGA 1200
LGA 1151
Cores/Threads
6/12
6/6
TDP
35 W
65 W
Cache L1 (d+i)
6x32+6x32 kB
6x32+6x32 kB
Cache L2
6x256 kB
6x256 kB
Cache L3
12288 kB
9216 kB
Date
April 2020
September 2017

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
i5-10400T
i5-8400
Test#1 (Integers)
21999
26118 (18.72%)
Test#2 (FP)
19977
23191 (16.09%)
Test#3 (Generic, ZIP)
4566
5403 (18.34%)
Test#1 (Memory)
11306
11161 (-1.28%)
TOTAL
57847
65873 (13.87%)

Multithread

i5-10400T

i5-8400
Test#1 (Integers)
136687
146011 (6.82%)
Test#2 (FP)
135254
133114 (-1.58%)
Test#3 (Generic, ZIP)
32756
30374 (-7.27%)
Test#1 (Memory)
2478
7828 (215.90%)
TOTAL
307175
317328 (3.31%)

Performance/W
i5-10400T
i5-8400
Test#1 (Integers)
3905 points/W
2246 points/W
Test#2 (FP)
3864 points/W
2048 points/W
Test#3 (Generic, ZIP)
936 points/W
467 points/W
Test#1 (Memory)
71 points/W
120 points/W
TOTAL
8776 points/W
4882 points/W

Performance/GHz
i5-10400T
i5-8400
Test#1 (Integers)
6111 points/GHz
6529 points/GHz
Test#2 (FP)
5549 points/GHz
5798 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1351 points/GHz
Test#1 (Memory)
3141 points/GHz
2790 points/GHz
TOTAL
16069 points/GHz
16468 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. 3.7.9