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Core i5-10400T vs i7-6820HQ


Description
The i5-10400T is based on Comet Lake architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i5-10400T gets a score of 307.2 k points while the i7-6820HQ gets 206.3 k points.

Summarizing, the i5-10400T is 1.5 times faster than the i7-6820HQ. 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-H
Architecture
Base frecuency
2 GHz
2.7 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
FC-LGA 1200
BGA1440
Cores/Threads
6/12
4/8
TDP
35 W
45 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
October 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
i7-6820HQ
Test#1 (Integers)
4004
3180 (-20.59%)
Test#2 (FP)
14189
13020 (-8.24%)
Test#3 (Generic, ZIP)
4620
4169 (-9.76%)
Test#1 (Memory)
11029
6931 (-37.16%)
TOTAL
33842
27299 (-19.33%)

Multithread

i5-10400T

i7-6820HQ
Test#1 (Integers)
22767
13259 (-41.76%)
Test#2 (FP)
96586
62228 (-35.57%)
Test#3 (Generic, ZIP)
31652
20342 (-35.73%)
Test#1 (Memory)
2451
5464 (122.91%)
TOTAL
153456
101292 (-33.99%)

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
i7-6820HQ
Test#1 (Integers)
12610
11536 (-8.52%)
Test#2 (FP)
17941
16687 (-6.99%)
Test#3 (Generic, ZIP)
4828
4514 (-6.50%)
Test#1 (Memory)
10811
7273 (-32.73%)
TOTAL
46191
40011 (-13.38%)

Multithread

i5-10400T

i7-6820HQ
Test#1 (Integers)
74617
48501 (-35.00%)
Test#2 (FP)
119634
77016 (-35.62%)
Test#3 (Generic, ZIP)
32645
21301 (-34.75%)
Test#1 (Memory)
2520
5242 (108.03%)
TOTAL
229416
152060 (-33.72%)

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
i7-6820HQ
Test#1 (Integers)
12498
11784 (-5.71%)
Test#2 (FP)
19053
18056 (-5.23%)
Test#3 (Generic, ZIP)
4722
4479 (-5.14%)
Test#1 (Memory)
10297
7117 (-30.88%)
TOTAL
46570
41437 (-11.02%)

Multithread

i5-10400T

i7-6820HQ
Test#1 (Integers)
74581
49458 (-33.68%)
Test#2 (FP)
126959
84798 (-33.21%)
Test#3 (Generic, ZIP)
31762
20703 (-34.82%)
Test#1 (Memory)
2497
4770 (91.03%)
TOTAL
235799
159730 (-32.26%)

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
i7-6820HQ
Test#1 (Integers)
21999
21147 (-3.87%)
Test#2 (FP)
19977
18663 (-6.58%)
Test#3 (Generic, ZIP)
4566
4359 (-4.52%)
Test#1 (Memory)
11306
6240 (-44.81%)
TOTAL
57847
50409 (-12.86%)

Multithread

i5-10400T

i7-6820HQ
Test#1 (Integers)
136687
91901 (-32.76%)
Test#2 (FP)
135254
87330 (-35.43%)
Test#3 (Generic, ZIP)
32756
20715 (-36.76%)
Test#1 (Memory)
2478
6325 (155.25%)
TOTAL
307175
206271 (-32.85%)

Performance/W
i5-10400T
i7-6820HQ
Test#1 (Integers)
3905 points/W
2042 points/W
Test#2 (FP)
3864 points/W
1941 points/W
Test#3 (Generic, ZIP)
936 points/W
460 points/W
Test#1 (Memory)
71 points/W
141 points/W
TOTAL
8776 points/W
4584 points/W

Performance/GHz
i5-10400T
i7-6820HQ
Test#1 (Integers)
6111 points/GHz
5874 points/GHz
Test#2 (FP)
5549 points/GHz
5184 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1211 points/GHz
Test#1 (Memory)
3141 points/GHz
1733 points/GHz
TOTAL
16069 points/GHz
14002 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