Core i7-8700k vs i7-6700K
Description
The i7-8700k is based on Coffee Lake architecture while the i7-6700K is based on Skylake.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-6700K gets 254.6 k points.
Summarizing, the i7-8700k is 1.7 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the i7-6700K gets 254.6 k points.
Summarizing, the i7-8700k is 1.7 times faster than the i7-6700K . 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
Base frecuency
3.7 GHz
4 GHz
Boost frecuency
4.7 GHz
4.2 GHz
Socket
LGA 1151
LGA 1151
Cores/Threads
6/12
4/8
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
4x32+4x32 kB
Cache L2
6x256 kB
256 kB
Cache L3
12288 kB
8192 kB
Date
October 2017
May 2015
Mean monothread perf.
80.6k points
63.22k points
Mean multithread perf.
443.77k points
254.56k 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
i7-8700k
i7-6700K
Test#1 (Integers)
4.13k
4.07k (x0.99)
Test#2 (FP)
16.96k
16.62k (x0.98)
Test#3 (Generic, ZIP)
5.56k
5.23k (x0.94)
Test#1 (Memory)
12.85k
6.28k (x0.49)
TOTAL
39.5k
32.2k (x0.82)
Multithread
i7-8700k
i7-6700K
Test#1 (Integers)
24.01k
16.37k (x0.68)
Test#2 (FP)
108.69k
77.34k (x0.71)
Test#3 (Generic, ZIP)
36.62k
25.65k (x0.7)
Test#1 (Memory)
9.33k
10.21k (x1.09)
TOTAL
178.64k
129.57k (x0.73)
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
i7-6700K
Test#1 (Integers)
12.92k
14.73k (x1.14)
Test#2 (FP)
20.68k
21.27k (x1.03)
Test#3 (Generic, ZIP)
5.3k
5.52k (x1.04)
Test#1 (Memory)
12.59k
6.32k (x0.5)
TOTAL
51.48k
47.84k (x0.93)
Multithread
i7-8700k
i7-6700K
Test#1 (Integers)
94.26k
61.09k (x0.65)
Test#2 (FP)
152.55k
99.17k (x0.65)
Test#3 (Generic, ZIP)
39.74k
26.57k (x0.67)
Test#1 (Memory)
8.53k
10.26k (x1.2)
TOTAL
295.07k
197.09k (x0.67)
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
i7-6700K
Test#1 (Integers)
31.2k
25.78k (x0.83)
Test#2 (FP)
27.82k
23.08k (x0.83)
Test#3 (Generic, ZIP)
6.57k
5.32k (x0.81)
Test#1 (Memory)
15k
9.03k (x0.6)
TOTAL
80.6k
63.22k (x0.78)
Multithread
i7-8700k
i7-6700K
Test#1 (Integers)
202.42k
112.83k (x0.56)
Test#2 (FP)
186.33k
106.86k (x0.57)
Test#3 (Generic, ZIP)
44.96k
25.76k (x0.57)
Test#1 (Memory)
10.05k
9.12k (x0.91)
TOTAL
443.77k
254.56k (x0.57)
Performance/W
i7-8700k
i7-6700K
Test#1 (Integers)
2131 points/W
1188 points/W
Test#2 (FP)
1961 points/W
1125 points/W
Test#3 (Generic, ZIP)
473 points/W
271 points/W
Test#1 (Memory)
106 points/W
96 points/W
TOTAL
4671 points/W
2680 points/W
Performance/GHz
i7-8700k
i7-6700K
Test#1 (Integers)
6639 points/GHz
6139 points/GHz
Test#2 (FP)
5919 points/GHz
5495 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1268 points/GHz
Test#1 (Memory)
3192 points/GHz
2150 points/GHz
TOTAL
17148 points/GHz
15052 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4