Core i7-6700K vs Ryzen 9 3900
Description
The i7-6700K is based on Skylake architecture while the 3900 is based on Zen 2.
Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the 3900 gets 687.5 k points.
Summarizing, the 3900 is 2.7 times faster than the i7-6700K . To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-6700K gets a score of 254.6 k points while the 3900 gets 687.5 k points.
Summarizing, the 3900 is 2.7 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
870f10
Core
Skylake-S
Matisse
Base frecuency
4 GHz
3.1 GHz
Boost frecuency
4.2 GHz
4.3 GHz
Socket
LGA 1151
AM4
Cores/Threads
4/8
12/24
TDP
95 W
65 W
Cache L1 (d+i)
4x32+4x32 kB
12x32+12x32 kB
Cache L2
256 kB
12x512 kB
Cache L3
8192 kB
4x16384 kB
Date
May 2015
September 2019
Mean monothread perf.
63.22k points
74.97k points
Mean multithread perf.
254.56k points
687.5k 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
3900
Test#1 (Integers)
4.07k
4.39k (x1.08)
Test#2 (FP)
16.62k
16.99k (x1.02)
Test#3 (Generic, ZIP)
5.23k
7.74k (x1.48)
Test#1 (Memory)
6.28k
24.57k (x3.91)
TOTAL
32.2k
53.69k (x1.67)
Multithread
i7-6700K
3900
Test#1 (Integers)
16.37k
48.45k (x2.96)
Test#2 (FP)
77.34k
230.81k (x2.98)
Test#3 (Generic, ZIP)
25.65k
122.82k (x4.79)
Test#1 (Memory)
10.21k
54.73k (x5.36)
TOTAL
129.57k
456.8k (x3.53)
SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i7-6700K
3900
Test#1 (Integers)
14.73k
16.59k (x1.13)
Test#2 (FP)
21.27k
24.55k (x1.15)
Test#3 (Generic, ZIP)
5.52k
8.55k (x1.55)
Test#1 (Memory)
6.32k
26.28k (x4.16)
TOTAL
47.84k
75.97k (x1.59)
Multithread
i7-6700K
3900
Test#1 (Integers)
61.09k
181.33k (x2.97)
Test#2 (FP)
99.17k
261.01k (x2.63)
Test#3 (Generic, ZIP)
26.57k
126.62k (x4.76)
Test#1 (Memory)
10.26k
66.64k (x6.5)
TOTAL
197.09k
635.6k (x3.22)
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
3900
Test#1 (Integers)
25.78k
16.85k (x0.65)
Test#2 (FP)
23.08k
26.03k (x1.13)
Test#3 (Generic, ZIP)
5.32k
9.54k (x1.79)
Test#1 (Memory)
9.03k
22.55k (x2.5)
TOTAL
63.22k
74.97k (x1.19)
Multithread
i7-6700K
3900
Test#1 (Integers)
112.83k
229.41k (x2.03)
Test#2 (FP)
106.86k
292.81k (x2.74)
Test#3 (Generic, ZIP)
25.76k
128.48k (x4.99)
Test#1 (Memory)
9.12k
36.8k (x4.04)
TOTAL
254.56k
687.5k (x2.7)
Performance/W
i7-6700K
3900
Test#1 (Integers)
1188 points/W
3529 points/W
Test#2 (FP)
1125 points/W
4505 points/W
Test#3 (Generic, ZIP)
271 points/W
1977 points/W
Test#1 (Memory)
96 points/W
566 points/W
TOTAL
2680 points/W
10577 points/W
Performance/GHz
i7-6700K
3900
Test#1 (Integers)
6139 points/GHz
3920 points/GHz
Test#2 (FP)
5495 points/GHz
6054 points/GHz
Test#3 (Generic, ZIP)
1268 points/GHz
2218 points/GHz
Test#1 (Memory)
2150 points/GHz
5243 points/GHz
TOTAL
15052 points/GHz
17435 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4