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Core i7-6820HQ vs i3-7100


Description
The i7-6820HQ is based on Skylake architecture while the i3-7100 is based on Kaby Lake.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the i3-7100 gets 126.5 k points.

Summarizing, the i7-6820HQ is 1.6 times faster than the i3-7100. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
906e9
Core
Skylake-H
Kaby Lake-S
Architecture
Base frecuency
2.7 GHz
3.9 GHz
Boost frecuency
3.6 GHz
3.9 GHz
Socket
BGA1440
LGA 1151
Cores/Threads
4/8
2/4
TDP
45 W
51 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
8192 kB
3072 kB
Date
October 2015
January 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
i3-7100
Test#1 (Integers)
3180
4010 (26.12%)
Test#2 (FP)
13020
16382 (25.83%)
Test#3 (Generic, ZIP)
4169
5310 (27.36%)
Test#1 (Memory)
6931
3984 (-42.52%)
TOTAL
27299
29686 (8.74%)

Multithread

i7-6820HQ

i3-7100
Test#1 (Integers)
13259
8097 (-38.93%)
Test#2 (FP)
62228
38702 (-37.81%)
Test#3 (Generic, ZIP)
20342
12689 (-37.62%)
Test#1 (Memory)
5464
3755 (-31.27%)
TOTAL
101292
63243 (-37.56%)

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
i3-7100
Test#1 (Integers)
11536
14043 (21.73%)
Test#2 (FP)
16687
20546 (23.12%)
Test#3 (Generic, ZIP)
4514
5405 (19.73%)
Test#1 (Memory)
7273
3995 (-45.07%)
TOTAL
40011
43989 (9.94%)

Multithread

i7-6820HQ

i3-7100
Test#1 (Integers)
48501
30090 (-37.96%)
Test#2 (FP)
77016
47844 (-37.88%)
Test#3 (Generic, ZIP)
21301
13134 (-38.34%)
Test#1 (Memory)
5242
3519 (-32.88%)
TOTAL
152060
94586 (-37.80%)

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
i3-7100
Test#1 (Integers)
11784
14411 (22.29%)
Test#2 (FP)
18056
22381 (23.95%)
Test#3 (Generic, ZIP)
4479
5454 (21.77%)
Test#1 (Memory)
7117
4964 (-30.26%)
TOTAL
41437
47210 (13.93%)

Multithread

i7-6820HQ

i3-7100
Test#1 (Integers)
49458
30484 (-38.37%)
Test#2 (FP)
84798
52082 (-38.58%)
Test#3 (Generic, ZIP)
20703
12972 (-37.34%)
Test#1 (Memory)
4770
4563 (-4.34%)
TOTAL
159730
100102 (-37.33%)

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
i3-7100
Test#1 (Integers)
21147
25769 (21.86%)
Test#2 (FP)
18663
23261 (24.64%)
Test#3 (Generic, ZIP)
4359
5432 (24.60%)
Test#1 (Memory)
6240
4091 (-34.44%)
TOTAL
50409
58553 (16.16%)

Multithread

i7-6820HQ

i3-7100
Test#1 (Integers)
91901
54982 (-40.17%)
Test#2 (FP)
87330
54727 (-37.33%)
Test#3 (Generic, ZIP)
20715
13117 (-36.68%)
Test#1 (Memory)
6325
3648 (-42.33%)
TOTAL
206271
126474 (-38.69%)

Performance/W
i7-6820HQ
i3-7100
Test#1 (Integers)
2042 points/W
1078 points/W
Test#2 (FP)
1941 points/W
1073 points/W
Test#3 (Generic, ZIP)
460 points/W
257 points/W
Test#1 (Memory)
141 points/W
72 points/W
TOTAL
4584 points/W
2480 points/W

Performance/GHz
i7-6820HQ
i3-7100
Test#1 (Integers)
5874 points/GHz
6607 points/GHz
Test#2 (FP)
5184 points/GHz
5964 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1393 points/GHz
Test#1 (Memory)
1733 points/GHz
1049 points/GHz
TOTAL
14002 points/GHz
15014 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