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Core i7-8700k vs Ryzen 7 1700X


Description
The i7-8700k is based on Coffee Lake architecture while the 1700X is based on Zen.

Using the multithread performance as a reference, the i7-8700k gets a score of 443.8 k points while the 1700X gets 381.8 k points.

Summarizing, the i7-8700k is 1.2 times faster than the 1700X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906ea
800f11
Core
Coffee Lake-S
Summit Ridge
Architecture
Base frecuency
3.7 GHz
3.4 GHz
Boost frecuency
4.7 GHz
3.8 GHz
Socket
LGA 1151
AM4
Cores/Threads
6/12
8/16
TDP
95 W
95 W
Cache L1 (d+i)
6x32+6x32 kB
8x64+8x32 kB
Cache L2
6x256 kB
8x512 kB
Cache L3
12288 kB
2x8192 kB
Date
October 2017
March 2017

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
1700X
Test#1 (Integers)
16874
12497 (-25.93%)
Test#2 (FP)
26119
22920 (-12.25%)
Test#3 (Generic, ZIP)
6329
5452 (-13.86%)
Test#1 (Memory)
13708
14723 (7.40%)
TOTAL
63030
55592 (-11.80%)

Multithread

i7-8700k

1700X
Test#1 (Integers)
105740
92514 (-12.51%)
Test#2 (FP)
180520
144762 (-19.81%)
Test#3 (Generic, ZIP)
44994
54429 (20.97%)
Test#1 (Memory)
8512
22078 (159.39%)
TOTAL
339766
313783 (-7.65%)

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
1700X
Test#1 (Integers)
31204
13950 (-55.29%)
Test#2 (FP)
27821
22997 (-17.34%)
Test#3 (Generic, ZIP)
6568
5276 (-19.66%)
Test#1 (Memory)
15004
15923 (6.12%)
TOTAL
80598
58147 (-27.86%)

Multithread

i7-8700k

1700X
Test#1 (Integers)
202422
113470 (-43.94%)
Test#2 (FP)
186332
205292 (10.18%)
Test#3 (Generic, ZIP)
44958
55832 (24.19%)
Test#1 (Memory)
10054
7218 (-28.21%)
TOTAL
443765
381812 (-13.96%)

Performance/W
i7-8700k
1700X
Test#1 (Integers)
2131 points/W
1194 points/W
Test#2 (FP)
1961 points/W
2161 points/W
Test#3 (Generic, ZIP)
473 points/W
588 points/W
Test#1 (Memory)
106 points/W
76 points/W
TOTAL
4671 points/W
4019 points/W

Performance/GHz
i7-8700k
1700X
Test#1 (Integers)
6639 points/GHz
3671 points/GHz
Test#2 (FP)
5919 points/GHz
6052 points/GHz
Test#3 (Generic, ZIP)
1397 points/GHz
1389 points/GHz
Test#1 (Memory)
3192 points/GHz
4190 points/GHz
TOTAL
17148 points/GHz
15302 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