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Ryzen 9 3950X vs Core i7-7700K


Description
The 3950X is based on Zen 2 architecture while the i7-7700K is based on Kaby Lake.

Using the multithread performance as a reference, the 3950X gets a score of 959.8 k points while the i7-7700K gets 289.9 k points.

Summarizing, the 3950X is 3.3 times faster than the i7-7700K . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
906e9
Core
Matisse
Kaby Lake-S
Architecture
Base frecuency
3.5 GHz
4.2 GHz
Boost frecuency
4.7 GHz
4.5 GHz
Socket
AM4
LGA 1151
Cores/Threads
16/32
4/8
TDP
105 W
95 W
Cache L1 (d+i)
16x32+16x32 kB
32+32 kB
Cache L2
16x512 kB
256 kB
Cache L3
4x16384 kB
8192 kB
Date
November 2019
September 2016
Mean monothread perf.
72.95k points
76.98k points
Mean multithread perf.
959.77k points
289.9k 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
3950X
i7-7700K
Test#1 (Integers)
16.49k
30.47k (x1.85)
Test#2 (FP)
26.16k
26.94k (x1.03)
Test#3 (Generic, ZIP)
7.9k
6.25k (x0.79)
Test#1 (Memory)
22.4k
13.32k (x0.59)
TOTAL
72.95k
76.98k (x1.06)

Multithread

3950X

i7-7700K
Test#1 (Integers)
334.49k
127.81k (x0.38)
Test#2 (FP)
423.74k
123.7k (x0.29)
Test#3 (Generic, ZIP)
187.85k
29.34k (x0.16)
Test#1 (Memory)
13.69k
9.05k (x0.66)
TOTAL
959.77k
289.9k (x0.3)

Performance/W
3950X
i7-7700K
Test#1 (Integers)
3186 points/W
1345 points/W
Test#2 (FP)
4036 points/W
1302 points/W
Test#3 (Generic, ZIP)
1789 points/W
309 points/W
Test#1 (Memory)
130 points/W
95 points/W
TOTAL
9141 points/W
3052 points/W

Performance/GHz
3950X
i7-7700K
Test#1 (Integers)
3509 points/GHz
6770 points/GHz
Test#2 (FP)
5566 points/GHz
5987 points/GHz
Test#3 (Generic, ZIP)
1681 points/GHz
1389 points/GHz
Test#1 (Memory)
4765 points/GHz
2960 points/GHz
TOTAL
15522 points/GHz
17106 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