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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 166.1 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
Mean monothread perf.
57.85k points
64.2k points
Mean multithread perf.
307.18k points
166.12k points

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)
4k
3.91k (x0.98)
Test#2 (FP)
14.19k
15.98k (x1.13)
Test#3 (Generic, ZIP)
4.62k
5.11k (x1.11)
Test#1 (Memory)
11.03k
11.05k (x1)
TOTAL
33.84k
36.05k (x1.07)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
22.77k
11.76k (x0.52)
Test#2 (FP)
96.59k
50.15k (x0.52)
Test#3 (Generic, ZIP)
31.65k
16.76k (x0.53)
Test#1 (Memory)
2.45k
4.17k (x1.7)
TOTAL
153.46k
82.84k (x0.54)

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)
12.61k
12.93k (x1.03)
Test#2 (FP)
17.94k
20.59k (x1.15)
Test#3 (Generic, ZIP)
4.83k
5.41k (x1.12)
Test#1 (Memory)
10.81k
10.48k (x0.97)
TOTAL
46.19k
49.41k (x1.07)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
74.62k
41.11k (x0.55)
Test#2 (FP)
119.63k
65.04k (x0.54)
Test#3 (Generic, ZIP)
32.65k
17.53k (x0.54)
Test#1 (Memory)
2.52k
4.22k (x1.68)
TOTAL
229.42k
127.9k (x0.56)

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)
12.5k
13.15k (x1.05)
Test#2 (FP)
19.05k
19.7k (x1.03)
Test#3 (Generic, ZIP)
4.72k
5.1k (x1.08)
Test#1 (Memory)
10.3k
9.21k (x0.89)
TOTAL
46.57k
47.16k (x1.01)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
74.58k
34.13k (x0.46)
Test#2 (FP)
126.96k
53.79k (x0.42)
Test#3 (Generic, ZIP)
31.76k
13.91k (x0.44)
Test#1 (Memory)
2.5k
4.12k (x1.65)
TOTAL
235.8k
105.95k (x0.45)

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)
22k
25.37k (x1.15)
Test#2 (FP)
19.98k
22.6k (x1.13)
Test#3 (Generic, ZIP)
4.57k
5.13k (x1.12)
Test#1 (Memory)
11.31k
11.1k (x0.98)
TOTAL
57.85k
64.2k (x1.11)

Multithread

i5-10400T

i7-8550U
Test#1 (Integers)
136.69k
72.82k (x0.53)
Test#2 (FP)
135.25k
71.71k (x0.53)
Test#3 (Generic, ZIP)
32.76k
17.35k (x0.53)
Test#1 (Memory)
2.48k
4.24k (x1.71)
TOTAL
307.18k
166.12k (x0.54)

Performance/W
i5-10400T
i7-8550U
Test#1 (Integers)
3905 points/W
4855 points/W
Test#2 (FP)
3864 points/W
4781 points/W
Test#3 (Generic, ZIP)
936 points/W
1157 points/W
Test#1 (Memory)
71 points/W
282 points/W
TOTAL
8776 points/W
11075 points/W

Performance/GHz
i5-10400T
i7-8550U
Test#1 (Integers)
6111 points/GHz
6343 points/GHz
Test#2 (FP)
5549 points/GHz
5650 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1282 points/GHz
Test#1 (Memory)
3141 points/GHz
2774 points/GHz
TOTAL
16069 points/GHz
16049 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