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Core i5-10400T vs i5-8250U


Description
The i5-10400T is based on Comet Lake architecture while the i5-8250U 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 i5-8250U gets 176 k points.

Summarizing, the i5-10400T is 1.7 times faster than the i5-8250U. 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
1.6 GHz
Boost frecuency
3.6 GHz
3.4 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
6144 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
i5-8250U
Test#1 (Integers)
4004
3322 (-17.04%)
Test#2 (FP)
14189
13499 (-4.86%)
Test#3 (Generic, ZIP)
4620
4105 (-11.14%)
Test#1 (Memory)
11029
7416 (-32.76%)
TOTAL
33842
28342 (-16.25%)

Multithread

i5-10400T

i5-8250U
Test#1 (Integers)
22767
13969 (-38.64%)
Test#2 (FP)
96586
50797 (-47.41%)
Test#3 (Generic, ZIP)
31652
14713 (-53.52%)
Test#1 (Memory)
2451
4763 (94.33%)
TOTAL
153456
84242 (-45.10%)

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
i5-8250U
Test#1 (Integers)
12610
12410 (-1.59%)
Test#2 (FP)
17941
18112 (0.95%)
Test#3 (Generic, ZIP)
4828
4785 (-0.88%)
Test#1 (Memory)
10811
8157 (-24.55%)
TOTAL
46191
43464 (-5.90%)

Multithread

i5-10400T

i5-8250U
Test#1 (Integers)
74617
42479 (-43.07%)
Test#2 (FP)
119634
60203 (-49.68%)
Test#3 (Generic, ZIP)
32645
14850 (-54.51%)
Test#1 (Memory)
2520
4770 (89.28%)
TOTAL
229416
122301 (-46.69%)

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
i5-8250U
Test#1 (Integers)
12498
12588 (0.72%)
Test#2 (FP)
19053
18890 (-0.86%)
Test#3 (Generic, ZIP)
4722
4648 (-1.56%)
Test#1 (Memory)
10297
8197 (-20.40%)
TOTAL
46570
44322 (-4.83%)

Multithread

i5-10400T

i5-8250U
Test#1 (Integers)
74581
45911 (-38.44%)
Test#2 (FP)
126959
69550 (-45.22%)
Test#3 (Generic, ZIP)
31762
16795 (-47.12%)
Test#1 (Memory)
2497
4830 (93.44%)
TOTAL
235799
137086 (-41.86%)

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
i5-8250U
Test#1 (Integers)
21999
22022 (0.10%)
Test#2 (FP)
19977
19620 (-1.79%)
Test#3 (Generic, ZIP)
4566
4660 (2.07%)
Test#1 (Memory)
11306
8550 (-24.38%)
TOTAL
57847
54852 (-5.18%)

Multithread

i5-10400T

i5-8250U
Test#1 (Integers)
136687
83330 (-39.04%)
Test#2 (FP)
135254
70301 (-48.02%)
Test#3 (Generic, ZIP)
32756
17159 (-47.62%)
Test#1 (Memory)
2478
5175 (108.83%)
TOTAL
307175
175965 (-42.72%)

Performance/W
i5-10400T
i5-8250U
Test#1 (Integers)
3905 points/W
5555 points/W
Test#2 (FP)
3864 points/W
4687 points/W
Test#3 (Generic, ZIP)
936 points/W
1144 points/W
Test#1 (Memory)
71 points/W
345 points/W
TOTAL
8776 points/W
11731 points/W

Performance/GHz
i5-10400T
i5-8250U
Test#1 (Integers)
6111 points/GHz
6477 points/GHz
Test#2 (FP)
5549 points/GHz
5771 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1371 points/GHz
Test#1 (Memory)
3141 points/GHz
2515 points/GHz
TOTAL
16069 points/GHz
16133 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