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Core i5-10400T vs i7-8550U


Description
The i5-10400T is based on Comet Lake architecture while the i7-8550U is based on Kaby Lake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i7-8550U gets 169.9 k points.

Summarizing, the i5-10400T is 1.8 times faster than the i7-8550U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
806ea
Core
Comet Lake-S
Kaby Lake-R
Architecture
Base frecuency
2 GHz
1.8 GHz
Boost frecuency
3.6 GHz
4 GHz
Socket
FC-LGA 1200
BGA1356
Cores/Threads
6/12
4/8
TDP
35 W
15 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
4x256 kB
Cache L3
12288 kB
8192 kB
Date
April 2020
August 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
i7-8550U
Test#1 (Integers)
4004
3911 (-2.32%)
Test#2 (FP)
14189
15977 (12.60%)
Test#3 (Generic, ZIP)
4620
5112 (10.66%)
Test#1 (Memory)
11029
11046 (0.15%)
TOTAL
33842
36047 (6.51%)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
22767
11761 (-48.34%)
Test#2 (FP)
96586
50154 (-48.07%)
Test#3 (Generic, ZIP)
31652
16756 (-47.06%)
Test#1 (Memory)
2451
4166 (69.99%)
TOTAL
153456
82837 (-46.02%)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i5-10400T
i7-8550U
Test#1 (Integers)
12610
12928 (2.52%)
Test#2 (FP)
17941
20589 (14.76%)
Test#3 (Generic, ZIP)
4828
5410 (12.06%)
Test#1 (Memory)
10811
10479 (-3.07%)
TOTAL
46191
49406 (6.96%)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
74617
41109 (-44.91%)
Test#2 (FP)
119634
65038 (-45.64%)
Test#3 (Generic, ZIP)
32645
17532 (-46.30%)
Test#1 (Memory)
2520
4222 (67.55%)
TOTAL
229416
127900 (-44.25%)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-10400T
i7-8550U
Test#1 (Integers)
12498
13153 (5.24%)
Test#2 (FP)
19053
19696 (3.37%)
Test#3 (Generic, ZIP)
4722
5101 (8.04%)
Test#1 (Memory)
10297
9213 (-10.53%)
TOTAL
46570
47162 (1.27%)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
74581
34130 (-54.24%)
Test#2 (FP)
126959
53788 (-57.63%)
Test#3 (Generic, ZIP)
31762
13906 (-56.22%)
Test#1 (Memory)
2497
4125 (65.18%)
TOTAL
235799
105948 (-55.07%)

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
i7-8550U
Test#1 (Integers)
21999
25859 (17.55%)
Test#2 (FP)
19977
23009 (15.18%)
Test#3 (Generic, ZIP)
4566
5225 (14.42%)
Test#1 (Memory)
11306
11503 (1.74%)
TOTAL
57847
65595 (13.39%)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
136687
74572 (-45.44%)
Test#2 (FP)
135254
73316 (-45.79%)
Test#3 (Generic, ZIP)
32756
17857 (-45.49%)
Test#1 (Memory)
2478
4203 (69.60%)
TOTAL
307175
169947 (-44.67%)

Performance/W
i5-10400T
i7-8550U
Test#1 (Integers)
3905 points/W
4971 points/W
Test#2 (FP)
3864 points/W
4888 points/W
Test#3 (Generic, ZIP)
936 points/W
1190 points/W
Test#1 (Memory)
71 points/W
280 points/W
TOTAL
8776 points/W
11330 points/W

Performance/GHz
i5-10400T
i7-8550U
Test#1 (Integers)
6111 points/GHz
6465 points/GHz
Test#2 (FP)
5549 points/GHz
5752 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1306 points/GHz
Test#1 (Memory)
3141 points/GHz
2876 points/GHz
TOTAL
16069 points/GHz
16399 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