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Ryzen 7 1800X vs Core i7-8700k


Description
The 1800X is based on Zen architecture while the i7-8700k is based on Coffee Lake.

Using the multithread performance as a reference, the 1800X gets a score of 410.5 k points while the i7-8700k gets 443.8 k points.

Summarizing, the i7-8700k is 1.1 times faster than the 1800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
800f11
906ea
Core
Summit Ridge
Coffee Lake-S
Architecture
Base frecuency
3.6 GHz
3.7 GHz
Boost frecuency
4 GHz
4.7 GHz
Socket
AM4
LGA 1151
Cores/Threads
8/16
6/12
TDP
95 W
95 W
Cache L1 (d+i)
8x64+8x32 kB
6x32+6x32 kB
Cache L2
8x512 kB
6x256 kB
Cache L3
2x8192 kB
12288 kB
Date
March 2017
October 2017
Mean monothread perf.
61.07k points
80.6k points
Mean multithread perf.
410.47k points
443.77k 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
1800X
i7-8700k
Test#1 (Integers)
4.14k
4.13k (x1)
Test#2 (FP)
19.07k
16.96k (x0.89)
Test#3 (Generic, ZIP)
5.77k
5.56k (x0.96)
Test#1 (Memory)
18.28k
12.85k (x0.7)
TOTAL
47.26k
39.5k (x0.84)

Multithread

1800X

i7-8700k
Test#1 (Integers)
34.48k
24.01k (x0.7)
Test#2 (FP)
169.65k
108.69k (x0.64)
Test#3 (Generic, ZIP)
63.68k
36.62k (x0.57)
Test#1 (Memory)
8.2k
9.33k (x1.14)
TOTAL
276.01k
178.64k (x0.65)

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
1800X
i7-8700k
Test#1 (Integers)
15.11k
16.87k (x1.12)
Test#2 (FP)
23.46k
26.12k (x1.11)
Test#3 (Generic, ZIP)
5.64k
6.33k (x1.12)
Test#1 (Memory)
17.52k
13.71k (x0.78)
TOTAL
61.72k
63.03k (x1.02)

Multithread

1800X

i7-8700k
Test#1 (Integers)
119.5k
105.74k (x0.88)
Test#2 (FP)
198.79k
180.52k (x0.91)
Test#3 (Generic, ZIP)
59.75k
44.99k (x0.75)
Test#1 (Memory)
11.58k
8.51k (x0.73)
TOTAL
389.62k
339.77k (x0.87)

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
1800X
i7-8700k
Test#1 (Integers)
15.02k
31.2k (x2.08)
Test#2 (FP)
24.26k
27.82k (x1.15)
Test#3 (Generic, ZIP)
5.53k
6.57k (x1.19)
Test#1 (Memory)
16.26k
15k (x0.92)
TOTAL
61.07k
80.6k (x1.32)

Multithread

1800X

i7-8700k
Test#1 (Integers)
122.92k
202.42k (x1.65)
Test#2 (FP)
220.32k
186.33k (x0.85)
Test#3 (Generic, ZIP)
59.78k
44.96k (x0.75)
Test#1 (Memory)
7.44k
10.05k (x1.35)
TOTAL
410.47k
443.77k (x1.08)

Performance/W
1800X
i7-8700k
Test#1 (Integers)
1294 points/W
2131 points/W
Test#2 (FP)
2319 points/W
1961 points/W
Test#3 (Generic, ZIP)
629 points/W
473 points/W
Test#1 (Memory)
78 points/W
106 points/W
TOTAL
4321 points/W
4671 points/W

Performance/GHz
1800X
i7-8700k
Test#1 (Integers)
3756 points/GHz
6639 points/GHz
Test#2 (FP)
6065 points/GHz
5919 points/GHz
Test#3 (Generic, ZIP)
1382 points/GHz
1397 points/GHz
Test#1 (Memory)
4065 points/GHz
3192 points/GHz
TOTAL
15267 points/GHz
17148 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