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Core i7-8700k vs i3-6100


Description
The i7-8700k is based on Coffee Lake architecture while the i3-6100 is based on Skylake.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i3-6100 gets 121.8 k points.

Summarizing, the i7-8700k is 3.6 times faster than the i3-6100 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
506e3
Core
Coffee Lake-S
Skylake-S
Architecture
Base frecuency
3.7 GHz
3.7 GHz
Boost frecuency
4.7 GHz
3.7 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
2/2
TDP
95 W
51 W
Cache L1 (d+i)
6x32+6x32 kB
32+32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
4096 kB
Date
October 2017
September 2015

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
i7-8700k
i3-6100
Test#1 (Integers)
4127
3815 (-7.56%)
Test#2 (FP)
16959
15652 (-7.71%)
Test#3 (Generic, ZIP)
5564
5140 (-7.62%)
Test#1 (Memory)
12845
4282 (-66.67%)
TOTAL
39495
28889 (-26.85%)

Multithread

i7-8700k

i3-6100
Test#1 (Integers)
24011
7750 (-67.72%)
Test#2 (FP)
108690
37327 (-65.66%)
Test#3 (Generic, ZIP)
36616
12129 (-66.88%)
Test#1 (Memory)
9327
3562 (-61.80%)
TOTAL
178644
60768 (-65.98%)

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
i7-8700k
i3-6100
Test#1 (Integers)
12920
13759 (6.49%)
Test#2 (FP)
20678
19955 (-3.50%)
Test#3 (Generic, ZIP)
5295
5435 (2.65%)
Test#1 (Memory)
12587
4399 (-65.05%)
TOTAL
51480
43549 (-15.41%)

Multithread

i7-8700k

i3-6100
Test#1 (Integers)
94259
28987 (-69.25%)
Test#2 (FP)
152549
45752 (-70.01%)
Test#3 (Generic, ZIP)
39735
12718 (-67.99%)
Test#1 (Memory)
8527
3678 (-56.86%)
TOTAL
295071
91135 (-69.11%)

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
i7-8700k
i3-6100
Test#1 (Integers)
16874
13775 (-18.36%)
Test#2 (FP)
26119
21211 (-18.79%)
Test#3 (Generic, ZIP)
6329
5203 (-17.78%)
Test#1 (Memory)
13708
3732 (-72.78%)
TOTAL
63030
43921 (-30.32%)

Multithread

i7-8700k

i3-6100
Test#1 (Integers)
105740
29019 (-72.56%)
Test#2 (FP)
180520
49553 (-72.55%)
Test#3 (Generic, ZIP)
44994
12302 (-72.66%)
Test#1 (Memory)
8512
3276 (-61.51%)
TOTAL
339766
94149 (-72.29%)

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
i7-8700k
i3-6100
Test#1 (Integers)
31204
23824 (-23.65%)
Test#2 (FP)
27821
21730 (-21.89%)
Test#3 (Generic, ZIP)
6568
5170 (-21.28%)
Test#1 (Memory)
15004
4106 (-72.63%)
TOTAL
80598
54830 (-31.97%)

Multithread

i7-8700k

i3-6100
Test#1 (Integers)
202422
54113 (-73.27%)
Test#2 (FP)
186332
51405 (-72.41%)
Test#3 (Generic, ZIP)
44958
12696 (-71.76%)
Test#1 (Memory)
10054
3626 (-63.94%)
TOTAL
443765
121840 (-72.54%)

Performance/W
i7-8700k
i3-6100
Test#1 (Integers)
2131 points/W
1061 points/W
Test#2 (FP)
1961 points/W
1008 points/W
Test#3 (Generic, ZIP)
473 points/W
249 points/W
Test#1 (Memory)
106 points/W
71 points/W
TOTAL
4671 points/W
2389 points/W

Performance/GHz
i7-8700k
i3-6100
Test#1 (Integers)
6639 points/GHz
6439 points/GHz
Test#2 (FP)
5919 points/GHz
5873 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1397 points/GHz
Test#1 (Memory)
3192 points/GHz
1110 points/GHz
TOTAL
17148 points/GHz
14819 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. 3.7.9