| | | | | | |

Core i7-6700K vs Ryzen 7 5800X


Description
The i7-6700K is based on Skylake architecture while the 5800X is based on Zen 3.

Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the 5800X gets 558.4 k points.

Summarizing, the 5800X is 2.2 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
a20f10
Core
Skylake-S
Vermeer
Architecture
Base frecuency
4 GHz
3.8 GHz
Boost frecuency
4.2 GHz
4.7 GHz
Socket
LGA 1151
AM4
Cores/Threads
4/8
8/16
TDP
95 W
105 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
256 kB
8x512 kB
Cache L3
8192 kB
32768 kB
Date
May 2015
November 2020
Mean monothread perf.
63.22k points
89.07k points
Mean multithread perf.
254.56k points
558.42k points

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
5800X
Test#1 (Integers)
25.78k
24.14k (x0.94)
Test#2 (FP)
23.08k
26.3k (x1.14)
Test#3 (Generic, ZIP)
5.32k
12.09k (x2.27)
Test#1 (Memory)
9.03k
26.54k (x2.94)
TOTAL
63.22k
89.07k (x1.41)

Multithread

i7-6700K

5800X
Test#1 (Integers)
112.83k
183.54k (x1.63)
Test#2 (FP)
106.86k
237.27k (x2.22)
Test#3 (Generic, ZIP)
25.76k
107.95k (x4.19)
Test#1 (Memory)
9.12k
29.66k (x3.25)
TOTAL
254.56k
558.42k (x2.19)

Performance/W
i7-6700K
5800X
Test#1 (Integers)
1188 points/W
1748 points/W
Test#2 (FP)
1125 points/W
2260 points/W
Test#3 (Generic, ZIP)
271 points/W
1028 points/W
Test#1 (Memory)
96 points/W
282 points/W
TOTAL
2680 points/W
5318 points/W

Performance/GHz
i7-6700K
5800X
Test#1 (Integers)
6139 points/GHz
5137 points/GHz
Test#2 (FP)
5495 points/GHz
5596 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2571 points/GHz
Test#1 (Memory)
2150 points/GHz
5646 points/GHz
TOTAL
15052 points/GHz
18951 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