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Core i7-6600U vs i3-6100


Description
Both models i7-6600U and i3-6100 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 i7-6600U gets a score of 79.2 k points while the i3-6100 gets 112.3 k points.

Summarizing, the i3-6100 is 1.4 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
506e3
Core
Skylake-U
Skylake-S
Architecture
Base frecuency
2.6 GHz
3.7 GHz
Boost frecuency
3.4 GHz
3.7 GHz
Socket
BGA1356
LGA 1151
Cores/Threads
2/4
2/2
TDP
15 W
51 W
Cache L1 (d+i)
2x32+2x32 kB
32+32 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
4096 kB
Date
September 2015
September 2015
Mean monothread perf.
39.73k points
52.84k points
Mean multithread perf.
79.22k points
112.28k 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
i7-6600U
i3-6100
Test#1 (Integers)
2.75k
3.81k (x1.39)
Test#2 (FP)
12.23k
15.65k (x1.28)
Test#3 (Generic, ZIP)
3.9k
5.14k (x1.32)
Test#1 (Memory)
5.61k
4.28k (x0.76)
TOTAL
24.48k
28.89k (x1.18)

Multithread

i7-6600U

i3-6100
Test#1 (Integers)
5.23k
7.75k (x1.48)
Test#2 (FP)
25k
37.33k (x1.49)
Test#3 (Generic, ZIP)
8.98k
12.13k (x1.35)
Test#1 (Memory)
4.73k
3.56k (x0.75)
TOTAL
43.95k
60.77k (x1.38)

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
i7-6600U
i3-6100
Test#1 (Integers)
6.76k
13.76k (x2.03)
Test#2 (FP)
9.58k
19.96k (x2.08)
Test#3 (Generic, ZIP)
2.46k
5.44k (x2.21)
Test#1 (Memory)
4.18k
4.4k (x1.05)
TOTAL
22.99k
43.55k (x1.89)

Multithread

i7-6600U

i3-6100
Test#1 (Integers)
14.37k
28.99k (x2.02)
Test#2 (FP)
23.79k
45.75k (x1.92)
Test#3 (Generic, ZIP)
5.71k
12.72k (x2.23)
Test#1 (Memory)
4.29k
3.68k (x0.86)
TOTAL
48.16k
91.14k (x1.89)

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
i7-6600U
i3-6100
Test#1 (Integers)
8.49k
13.78k (x1.62)
Test#2 (FP)
10.92k
21.21k (x1.94)
Test#3 (Generic, ZIP)
2.76k
5.2k (x1.88)
Test#1 (Memory)
4.93k
3.73k (x0.76)
TOTAL
27.1k
43.92k (x1.62)

Multithread

i7-6600U

i3-6100
Test#1 (Integers)
14.11k
29.02k (x2.06)
Test#2 (FP)
20.05k
49.55k (x2.47)
Test#3 (Generic, ZIP)
6.17k
12.3k (x1.99)
Test#1 (Memory)
4.73k
3.28k (x0.69)
TOTAL
45.05k
94.15k (x2.09)

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
i7-6600U
i3-6100
Test#1 (Integers)
16.72k
22.89k (x1.37)
Test#2 (FP)
14.7k
21.04k (x1.43)
Test#3 (Generic, ZIP)
3.4k
4.9k (x1.44)
Test#1 (Memory)
4.9k
4.01k (x0.82)
TOTAL
39.73k
52.84k (x1.33)

Multithread

i7-6600U

i3-6100
Test#1 (Integers)
33.41k
50.05k (x1.5)
Test#2 (FP)
31.66k
47.13k (x1.49)
Test#3 (Generic, ZIP)
8.18k
11.38k (x1.39)
Test#1 (Memory)
5.97k
3.72k (x0.62)
TOTAL
79.22k
112.28k (x1.42)

Performance/W
i7-6600U
i3-6100
Test#1 (Integers)
2227 points/W
981 points/W
Test#2 (FP)
2111 points/W
924 points/W
Test#3 (Generic, ZIP)
546 points/W
223 points/W
Test#1 (Memory)
398 points/W
73 points/W
TOTAL
5282 points/W
2202 points/W

Performance/GHz
i7-6600U
i3-6100
Test#1 (Integers)
4919 points/GHz
6187 points/GHz
Test#2 (FP)
4325 points/GHz
5686 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
1325 points/GHz
Test#1 (Memory)
1441 points/GHz
1084 points/GHz
TOTAL
11684 points/GHz
14282 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