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Core i7-6700K vs Ryzen 7 5800H


Description
The i7-6700K is based on Skylake architecture while the 5800H 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 5800H gets 426.9 k points.

Summarizing, the 5800H 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
506e3
a50f00
Core
Skylake-S
Cezanne
Architecture
Base frecuency
4 GHz
3.2 GHz
Boost frecuency
4.2 GHz
4.4 GHz
Socket
LGA 1151
BGA 1140
Cores/Threads
4/8
8/16
TDP
95 W
45 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
256 kB
8x512 kB
Cache L3
8192 kB
16384 kB
Date
May 2015
February 2021
Mean monothread perf.
63.22k points
74.56k points
Mean multithread perf.
254.56k points
426.9k 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
i7-6700K
5800H
Test#1 (Integers)
4.07k
4.31k (x1.06)
Test#2 (FP)
16.62k
17.51k (x1.05)
Test#3 (Generic, ZIP)
5.23k
10.53k (x2.02)
Test#1 (Memory)
6.28k
23.57k (x3.75)
TOTAL
32.2k
55.92k (x1.74)

Multithread

i7-6700K

5800H
Test#1 (Integers)
16.37k
24.18k (x1.48)
Test#2 (FP)
77.34k
117.98k (x1.53)
Test#3 (Generic, ZIP)
25.65k
70.96k (x2.77)
Test#1 (Memory)
10.21k
8.08k (x0.79)
TOTAL
129.57k
221.19k (x1.71)

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
5800H
Test#1 (Integers)
25.78k
20.37k (x0.79)
Test#2 (FP)
23.08k
22.52k (x0.98)
Test#3 (Generic, ZIP)
5.32k
10.18k (x1.91)
Test#1 (Memory)
9.03k
21.49k (x2.38)
TOTAL
63.22k
74.56k (x1.18)

Multithread

i7-6700K

5800H
Test#1 (Integers)
112.83k
144.01k (x1.28)
Test#2 (FP)
106.86k
191.86k (x1.8)
Test#3 (Generic, ZIP)
25.76k
84.53k (x3.28)
Test#1 (Memory)
9.12k
6.5k (x0.71)
TOTAL
254.56k
426.9k (x1.68)

Performance/W
i7-6700K
5800H
Test#1 (Integers)
1188 points/W
3200 points/W
Test#2 (FP)
1125 points/W
4264 points/W
Test#3 (Generic, ZIP)
271 points/W
1878 points/W
Test#1 (Memory)
96 points/W
144 points/W
TOTAL
2680 points/W
9487 points/W

Performance/GHz
i7-6700K
5800H
Test#1 (Integers)
6139 points/GHz
4630 points/GHz
Test#2 (FP)
5495 points/GHz
5117 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2314 points/GHz
Test#1 (Memory)
2150 points/GHz
4883 points/GHz
TOTAL
15052 points/GHz
16944 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