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Core i7-6700K vs i3-6100


Description
Both models i7-6700K 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 i7-6700K gets a score of 254.6 k points while the i3-6100 gets 112.3 k points.

Summarizing, the i7-6700K is 2.3 times faster than the i3-6100 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
506e3
Core
Skylake-S
Skylake-S
Architecture
Base frecuency
4 GHz
3.7 GHz
Boost frecuency
4.2 GHz
3.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
4/8
2/2
TDP
95 W
51 W
Cache L1 (d+i)
4x32+4x32 kB
32+32 kB
Cache L2
256 kB
256 kB
Cache L3
8192 kB
4096 kB
Date
May 2015
September 2015
Mean monothread perf.
63.22k points
52.84k points
Mean multithread perf.
254.56k 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
i7-6700K
i3-6100
Test#1 (Integers)
4.07k
3.81k (x0.94)
Test#2 (FP)
16.62k
15.65k (x0.94)
Test#3 (Generic, ZIP)
5.23k
5.14k (x0.98)
Test#1 (Memory)
6.28k
4.28k (x0.68)
TOTAL
32.2k
28.89k (x0.9)

Multithread

i7-6700K

i3-6100
Test#1 (Integers)
16.37k
7.75k (x0.47)
Test#2 (FP)
77.34k
37.33k (x0.48)
Test#3 (Generic, ZIP)
25.65k
12.13k (x0.47)
Test#1 (Memory)
10.21k
3.56k (x0.35)
TOTAL
129.57k
60.77k (x0.47)

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
i7-6700K
i3-6100
Test#1 (Integers)
14.73k
13.76k (x0.93)
Test#2 (FP)
21.27k
19.96k (x0.94)
Test#3 (Generic, ZIP)
5.52k
5.44k (x0.99)
Test#1 (Memory)
6.32k
4.4k (x0.7)
TOTAL
47.84k
43.55k (x0.91)

Multithread

i7-6700K

i3-6100
Test#1 (Integers)
61.09k
28.99k (x0.47)
Test#2 (FP)
99.17k
45.75k (x0.46)
Test#3 (Generic, ZIP)
26.57k
12.72k (x0.48)
Test#1 (Memory)
10.26k
3.68k (x0.36)
TOTAL
197.09k
91.14k (x0.46)

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
i7-6700K
i3-6100
Test#1 (Integers)
25.78k
22.89k (x0.89)
Test#2 (FP)
23.08k
21.04k (x0.91)
Test#3 (Generic, ZIP)
5.32k
4.9k (x0.92)
Test#1 (Memory)
9.03k
4.01k (x0.44)
TOTAL
63.22k
52.84k (x0.84)

Multithread

i7-6700K

i3-6100
Test#1 (Integers)
112.83k
50.05k (x0.44)
Test#2 (FP)
106.86k
47.13k (x0.44)
Test#3 (Generic, ZIP)
25.76k
11.38k (x0.44)
Test#1 (Memory)
9.12k
3.72k (x0.41)
TOTAL
254.56k
112.28k (x0.44)

Performance/W
i7-6700K
i3-6100
Test#1 (Integers)
1188 points/W
981 points/W
Test#2 (FP)
1125 points/W
924 points/W
Test#3 (Generic, ZIP)
271 points/W
223 points/W
Test#1 (Memory)
96 points/W
73 points/W
TOTAL
2680 points/W
2202 points/W

Performance/GHz
i7-6700K
i3-6100
Test#1 (Integers)
6139 points/GHz
6187 points/GHz
Test#2 (FP)
5495 points/GHz
5686 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
1325 points/GHz
Test#1 (Memory)
2150 points/GHz
1084 points/GHz
TOTAL
15052 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