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Core i5-10400T vs i5-6500


Description
The i5-10400T is based on Comet Lake architecture while the i5-6500 is based on Skylake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i5-6500 gets 181 k points.

Summarizing, the i5-10400T is 1.7 times faster than the i5-6500 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a0653
506e3
Core
Comet Lake-S
Skylake-S
Architecture
Base frecuency
2 GHz
3.2 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
FC-LGA 1200
LGA 1151
Cores/Threads
6/12
4/4
TDP
35 W
65 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
September 2015

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
i5-6500
Test#1 (Integers)
4004
3457 (-13.66%)
Test#2 (FP)
14189
14606 (2.94%)
Test#3 (Generic, ZIP)
4620
4657 (0.80%)
Test#1 (Memory)
11029
6991 (-36.61%)
TOTAL
33842
29711 (-12.21%)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
22767
12523 (-44.99%)
Test#2 (FP)
96586
51131 (-47.06%)
Test#3 (Generic, ZIP)
31652
17411 (-44.99%)
Test#1 (Memory)
2451
3896 (58.96%)
TOTAL
153456
84961 (-44.63%)

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
i5-6500
Test#1 (Integers)
12498
13074 (4.61%)
Test#2 (FP)
19053
20232 (6.19%)
Test#3 (Generic, ZIP)
4722
4926 (4.32%)
Test#1 (Memory)
10297
9197 (-10.68%)
TOTAL
46570
47429 (1.84%)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
74581
49623 (-33.46%)
Test#2 (FP)
126959
74824 (-41.06%)
Test#3 (Generic, ZIP)
31762
18464 (-41.87%)
Test#1 (Memory)
2497
4210 (68.60%)
TOTAL
235799
147121 (-37.61%)

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
i5-6500
Test#1 (Integers)
21999
23105 (5.03%)
Test#2 (FP)
19977
19982 (0.03%)
Test#3 (Generic, ZIP)
4566
4625 (1.29%)
Test#1 (Memory)
11306
6813 (-39.74%)
TOTAL
57847
54525 (-5.74%)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
136687
84853 (-37.92%)
Test#2 (FP)
135254
73429 (-45.71%)
Test#3 (Generic, ZIP)
32756
16521 (-49.56%)
Test#1 (Memory)
2478
6203 (150.32%)
TOTAL
307175
181006 (-41.07%)

Performance/W
i5-10400T
i5-6500
Test#1 (Integers)
3905 points/W
1305 points/W
Test#2 (FP)
3864 points/W
1130 points/W
Test#3 (Generic, ZIP)
936 points/W
254 points/W
Test#1 (Memory)
71 points/W
95 points/W
TOTAL
8776 points/W
2785 points/W

Performance/GHz
i5-10400T
i5-6500
Test#1 (Integers)
6111 points/GHz
6418 points/GHz
Test#2 (FP)
5549 points/GHz
5551 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1285 points/GHz
Test#1 (Memory)
3141 points/GHz
1893 points/GHz
TOTAL
16069 points/GHz
15146 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