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Core i7-6820HQ vs i3-8100


Description
The i7-6820HQ is based on Skylake architecture while the i3-8100 is based on Coffee Lake.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i3-8100 gets 207.2 k points.

Summarizing, the i3-8100 is 1 times faster than the i7-6820HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906eb
Core
Skylake-H
Coffee Lake-S
Architecture
Base frecuency
2.7 GHz
3.6 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
BGA1440
LGA 1151
Cores/Threads
4/8
4/4
TDP
45 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
4x32+4x32 kB
Cache L2
4x256 kB
4x256 kB
Cache L3
8192 kB
6144 kB
Date
October 2015
October 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
i7-6820HQ
i3-8100
Test#1 (Integers)
3180
3704 (16.47%)
Test#2 (FP)
13020
15303 (17.54%)
Test#3 (Generic, ZIP)
4169
4810 (15.38%)
Test#1 (Memory)
6931
5648 (-18.50%)
TOTAL
27299
29465 (7.93%)

Multithread

i7-6820HQ

i3-8100
Test#1 (Integers)
13259
14280 (7.70%)
Test#2 (FP)
62228
59006 (-5.18%)
Test#3 (Generic, ZIP)
20342
18550 (-8.81%)
Test#1 (Memory)
5464
3955 (-27.61%)
TOTAL
101292
95790 (-5.43%)

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
i7-6820HQ
i3-8100
Test#1 (Integers)
11536
13509 (17.10%)
Test#2 (FP)
16687
19411 (16.32%)
Test#3 (Generic, ZIP)
4514
5066 (12.22%)
Test#1 (Memory)
7273
7398 (1.72%)
TOTAL
40011
45384 (13.43%)

Multithread

i7-6820HQ

i3-8100
Test#1 (Integers)
48501
52705 (8.67%)
Test#2 (FP)
77016
75624 (-1.81%)
Test#3 (Generic, ZIP)
21301
19695 (-7.54%)
Test#1 (Memory)
5242
4350 (-17.02%)
TOTAL
152060
152375 (0.21%)

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
i7-6820HQ
i3-8100
Test#1 (Integers)
11784
13519 (14.72%)
Test#2 (FP)
18056
20623 (14.22%)
Test#3 (Generic, ZIP)
4479
4973 (11.02%)
Test#1 (Memory)
7117
7363 (3.46%)
TOTAL
41437
46479 (12.17%)

Multithread

i7-6820HQ

i3-8100
Test#1 (Integers)
49458
53186 (7.54%)
Test#2 (FP)
84798
80814 (-4.70%)
Test#3 (Generic, ZIP)
20703
19314 (-6.71%)
Test#1 (Memory)
4770
3977 (-16.63%)
TOTAL
159730
157290 (-1.53%)

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
i7-6820HQ
i3-8100
Test#1 (Integers)
21147
24458 (15.66%)
Test#2 (FP)
18663
21606 (15.77%)
Test#3 (Generic, ZIP)
4359
5090 (16.76%)
Test#1 (Memory)
6240
7873 (26.16%)
TOTAL
50409
59026 (17.10%)

Multithread

i7-6820HQ

i3-8100
Test#1 (Integers)
91901
97031 (5.58%)
Test#2 (FP)
87330
86109 (-1.40%)
Test#3 (Generic, ZIP)
20715
19952 (-3.68%)
Test#1 (Memory)
6325
4086 (-35.40%)
TOTAL
206271
207178 (0.44%)

Performance/W
i7-6820HQ
i3-8100
Test#1 (Integers)
2042 points/W
1493 points/W
Test#2 (FP)
1941 points/W
1325 points/W
Test#3 (Generic, ZIP)
460 points/W
307 points/W
Test#1 (Memory)
141 points/W
63 points/W
TOTAL
4584 points/W
3187 points/W

Performance/GHz
i7-6820HQ
i3-8100
Test#1 (Integers)
5874 points/GHz
6794 points/GHz
Test#2 (FP)
5184 points/GHz
6002 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1414 points/GHz
Test#1 (Memory)
1733 points/GHz
2187 points/GHz
TOTAL
14002 points/GHz
16396 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. 3.7.8