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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 179.4 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
Mean monothread perf.
57.85k points
53.7k points
Mean multithread perf.
307.18k points
179.44k 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
i5-6500
Test#1 (Integers)
4k
3.46k (x0.86)
Test#2 (FP)
14.19k
14.61k (x1.03)
Test#3 (Generic, ZIP)
4.62k
4.66k (x1.01)
Test#1 (Memory)
11.03k
6.99k (x0.63)
TOTAL
33.84k
29.71k (x0.88)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
22.77k
12.52k (x0.55)
Test#2 (FP)
96.59k
51.13k (x0.53)
Test#3 (Generic, ZIP)
31.65k
17.41k (x0.55)
Test#1 (Memory)
2.45k
3.9k (x1.59)
TOTAL
153.46k
84.96k (x0.55)

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)
12.5k
13.07k (x1.05)
Test#2 (FP)
19.05k
20.23k (x1.06)
Test#3 (Generic, ZIP)
4.72k
4.93k (x1.04)
Test#1 (Memory)
10.3k
9.2k (x0.89)
TOTAL
46.57k
47.43k (x1.02)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
74.58k
49.62k (x0.67)
Test#2 (FP)
126.96k
74.82k (x0.59)
Test#3 (Generic, ZIP)
31.76k
18.46k (x0.58)
Test#1 (Memory)
2.5k
4.21k (x1.69)
TOTAL
235.8k
147.12k (x0.62)

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)
22k
22.89k (x1.04)
Test#2 (FP)
19.98k
19.87k (x0.99)
Test#3 (Generic, ZIP)
4.57k
4.58k (x1)
Test#1 (Memory)
11.31k
6.36k (x0.56)
TOTAL
57.85k
53.7k (x0.93)

Multithread

i5-10400T

i5-6500
Test#1 (Integers)
136.69k
84.36k (x0.62)
Test#2 (FP)
135.25k
72.91k (x0.54)
Test#3 (Generic, ZIP)
32.76k
16.08k (x0.49)
Test#1 (Memory)
2.48k
6.1k (x2.46)
TOTAL
307.18k
179.44k (x0.58)

Performance/W
i5-10400T
i5-6500
Test#1 (Integers)
3905 points/W
1298 points/W
Test#2 (FP)
3864 points/W
1122 points/W
Test#3 (Generic, ZIP)
936 points/W
247 points/W
Test#1 (Memory)
71 points/W
94 points/W
TOTAL
8776 points/W
2761 points/W

Performance/GHz
i5-10400T
i5-6500
Test#1 (Integers)
6111 points/GHz
6359 points/GHz
Test#2 (FP)
5549 points/GHz
5521 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1271 points/GHz
Test#1 (Memory)
3141 points/GHz
1766 points/GHz
TOTAL
16069 points/GHz
14917 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