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Core i7-6820HQ vs i3-6100T


Description
Both models i7-6820HQ and i3-6100T are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 205.9 k points while the i3-6100T gets 105.2 k points.

Summarizing, the i7-6820HQ is 2 times faster than the i3-6100T. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-H
Skylake-S
Architecture
Base frecuency
2.7 GHz
3.2 GHz
Boost frecuency
3.6 GHz
3.2 GHz
Socket
BGA1440
LGA 1151
Cores/Threads
4/8
2/4
TDP
45 W
35 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
November 2015
Mean monothread perf.
50.1k points
43.92k points
Mean multithread perf.
205.89k points
105.21k 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
i7-6820HQ
i3-6100T
Test#1 (Integers)
3.18k
3.14k (x0.99)
Test#2 (FP)
13.02k
12.26k (x0.94)
Test#3 (Generic, ZIP)
4.17k
3.94k (x0.94)
Test#1 (Memory)
6.93k
2.21k (x0.32)
TOTAL
27.3k
21.55k (x0.79)

Multithread

i7-6820HQ

i3-6100T
Test#1 (Integers)
13.26k
6.52k (x0.49)
Test#2 (FP)
62.23k
30.61k (x0.49)
Test#3 (Generic, ZIP)
20.34k
10.59k (x0.52)
Test#1 (Memory)
5.46k
2.77k (x0.51)
TOTAL
101.29k
50.49k (x0.5)

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
i3-6100T
Test#1 (Integers)
11.78k
10.46k (x0.89)
Test#2 (FP)
18.06k
17.55k (x0.97)
Test#3 (Generic, ZIP)
4.48k
3.71k (x0.83)
Test#1 (Memory)
7.12k
3.07k (x0.43)
TOTAL
41.44k
34.79k (x0.84)

Multithread

i7-6820HQ

i3-6100T
Test#1 (Integers)
49.46k
23.92k (x0.48)
Test#2 (FP)
84.8k
42.11k (x0.5)
Test#3 (Generic, ZIP)
20.7k
10.51k (x0.51)
Test#1 (Memory)
4.77k
2.57k (x0.54)
TOTAL
159.73k
79.1k (x0.5)

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
i3-6100T
Test#1 (Integers)
20.99k
19.58k (x0.93)
Test#2 (FP)
18.63k
16.97k (x0.91)
Test#3 (Generic, ZIP)
4.33k
3.91k (x0.9)
Test#1 (Memory)
6.15k
3.47k (x0.56)
TOTAL
50.1k
43.92k (x0.88)

Multithread

i7-6820HQ

i3-6100T
Test#1 (Integers)
91.8k
47.02k (x0.51)
Test#2 (FP)
87.24k
44.41k (x0.51)
Test#3 (Generic, ZIP)
20.55k
9.93k (x0.48)
Test#1 (Memory)
6.3k
3.85k (x0.61)
TOTAL
205.89k
105.21k (x0.51)

Performance/W
i7-6820HQ
i3-6100T
Test#1 (Integers)
2040 points/W
1344 points/W
Test#2 (FP)
1939 points/W
1269 points/W
Test#3 (Generic, ZIP)
457 points/W
284 points/W
Test#1 (Memory)
140 points/W
110 points/W
TOTAL
4575 points/W
3006 points/W

Performance/GHz
i7-6820HQ
i3-6100T
Test#1 (Integers)
5831 points/GHz
6119 points/GHz
Test#2 (FP)
5174 points/GHz
5303 points/GHz
Test#3 (Generic, ZIP)
1204 points/GHz
1221 points/GHz
Test#1 (Memory)
1708 points/GHz
1084 points/GHz
TOTAL
13917 points/GHz
13726 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