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Core i7-6900K vs Ryzen 7 5800X


Description
The i7-6900K is based on Broadwell architecture while the 5800X is based on Zen 3.

Using the multithread performance as a reference, the i7-6900K gets a score of 427.5 k points while the 5800X gets 558.4 k points.

Summarizing, the 5800X is 1.3 times faster than the i7-6900K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406f1
a20f10
Core
Broadwell-E
Vermeer
Architecture
Base frecuency
3.2 GHz
3.8 GHz
Boost frecuency
3.7 GHz
4.7 GHz
Socket
LGA 2011-3
AM4
Cores/Threads
8/16
8/16
TDP
140 W
105 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x256 kB
8x512 kB
Cache L3
20480 kB
32768 kB
Date
September 2016
November 2020
Mean monothread perf.
49.76k points
89.07k points
Mean multithread perf.
427.51k 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
i7-6900K
5800X
Test#1 (Integers)
23.11k
24.14k (x1.04)
Test#2 (FP)
17.84k
26.3k (x1.47)
Test#3 (Generic, ZIP)
5.34k
12.09k (x2.26)
Test#1 (Memory)
3.47k
26.54k (x7.65)
TOTAL
49.76k
89.07k (x1.79)

Multithread

i7-6900K

5800X
Test#1 (Integers)
184.19k
183.54k (x1)
Test#2 (FP)
181.2k
237.27k (x1.31)
Test#3 (Generic, ZIP)
47.44k
107.95k (x2.28)
Test#1 (Memory)
14.69k
29.66k (x2.02)
TOTAL
427.51k
558.42k (x1.31)

Performance/W
i7-6900K
5800X
Test#1 (Integers)
1316 points/W
1748 points/W
Test#2 (FP)
1294 points/W
2260 points/W
Test#3 (Generic, ZIP)
339 points/W
1028 points/W
Test#1 (Memory)
105 points/W
282 points/W
TOTAL
3054 points/W
5318 points/W

Performance/GHz
i7-6900K
5800X
Test#1 (Integers)
6247 points/GHz
5137 points/GHz
Test#2 (FP)
4822 points/GHz
5596 points/GHz
Test#3 (Generic, ZIP)
1444 points/GHz
2571 points/GHz
Test#1 (Memory)
938 points/GHz
5646 points/GHz
TOTAL
13450 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