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Core i5-10400T vs i9-7980XE


Description
The i5-10400T is based on Comet Lake architecture while the i9-7980XE is based on Skylake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i9-7980XE gets 1223.8 k points.

Summarizing, the i9-7980XE is 4 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
50654
Core
Comet Lake-S
Skylake-X
Architecture
Base frecuency
2 GHz
2.6 GHz
Boost frecuency
3.6 GHz
4.4 GHz
Socket
FC-LGA 1200
LGA 2066
Cores/Threads
6/12
18/36
TDP
35 W
165 W
Cache L1 (d+i)
6x32+6x32 kB
18x32+18x32 kB
Cache L2
6x256 kB
18x1024 kB
Cache L3
12288 kB
25344 kB
Date
April 2020
May 2017

Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-10400T
i9-7980XE
Test#1 (Integers)
4004
4889 (22.09%)
Test#2 (FP)
14189
19975 (40.78%)
Test#3 (Generic, ZIP)
4620
6145 (33.02%)
Test#1 (Memory)
11029
9812 (-11.03%)
TOTAL
33842
40821 (20.62%)

Multithread

i5-10400T

i9-7980XE
Test#1 (Integers)
22767
79802 (250.51%)
Test#2 (FP)
96586
372721 (285.90%)
Test#3 (Generic, ZIP)
31652
121424 (283.62%)
Test#1 (Memory)
2451
26481 (980.40%)
TOTAL
153456
600427 (291.27%)

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
i9-7980XE
Test#1 (Integers)
21999
31156 (41.63%)
Test#2 (FP)
19977
28125 (40.79%)
Test#3 (Generic, ZIP)
4566
6651 (45.67%)
Test#1 (Memory)
11306
10498 (-7.14%)
TOTAL
57847
76431 (32.12%)

Multithread

i5-10400T

i9-7980XE
Test#1 (Integers)
136687
560190 (309.83%)
Test#2 (FP)
135254
516975 (282.22%)
Test#3 (Generic, ZIP)
32756
123940 (278.37%)
Test#1 (Memory)
2478
22687 (815.52%)
TOTAL
307175
1223792 (298.40%)

Performance/W
i5-10400T
i9-7980XE
Test#1 (Integers)
3905 points/W
3395 points/W
Test#2 (FP)
3864 points/W
3133 points/W
Test#3 (Generic, ZIP)
936 points/W
751 points/W
Test#1 (Memory)
71 points/W
137 points/W
TOTAL
8776 points/W
7417 points/W

Performance/GHz
i5-10400T
i9-7980XE
Test#1 (Integers)
6111 points/GHz
7081 points/GHz
Test#2 (FP)
5549 points/GHz
6392 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1512 points/GHz
Test#1 (Memory)
3141 points/GHz
2386 points/GHz
TOTAL
16069 points/GHz
17371 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