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Ryzen 9 3900X vs Core i7-7700


Description
The 3900X is based on Zen 2 architecture while the i7-7700 is based on Kaby Lake.

Using the multithread performance as a reference, the 3900X gets a score of 756.3 k points while the i7-7700 gets 257.5 k points.

Summarizing, the 3900X is 2.9 times faster than the i7-7700 . 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
3.8 GHz
3.6 GHz
Boost frecuency
4.6 GHz
4.2 GHz
Socket
AM4
LGA 1151
Cores/Threads
12/24
4/8
TDP
105 W
65 W
Cache L1 (d+i)
12x32+12x32 kB
32+32 kB
Cache L2
12x512 kB
256 kB
Cache L3
4x16384 kB
8192 kB
Date
July 2019
September 2016
Mean monothread perf.
72.51k points
67.33k points
Mean multithread perf.
756.3k points
257.52k 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
3900X
i7-7700
Test#1 (Integers)
4.46k
4.23k (x0.95)
Test#2 (FP)
18.46k
16.76k (x0.91)
Test#3 (Generic, ZIP)
8.05k
5.42k (x0.67)
Test#1 (Memory)
23.71k
12.23k (x0.52)
TOTAL
54.68k
38.64k (x0.71)

Multithread

3900X

i7-7700
Test#1 (Integers)
52.65k
16.71k (x0.32)
Test#2 (FP)
265.41k
73.1k (x0.28)
Test#3 (Generic, ZIP)
140.78k
25.76k (x0.18)
Test#1 (Memory)
46.91k
7.12k (x0.15)
TOTAL
505.76k
122.68k (x0.24)

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
3900X
i7-7700
Test#1 (Integers)
17.35k
15.33k (x0.88)
Test#2 (FP)
25.87k
21.94k (x0.85)
Test#3 (Generic, ZIP)
8.72k
5.85k (x0.67)
Test#1 (Memory)
27.86k
12.52k (x0.45)
TOTAL
79.8k
55.64k (x0.7)

Multithread

3900X

i7-7700
Test#1 (Integers)
201.57k
61.73k (x0.31)
Test#2 (FP)
284.41k
99.91k (x0.35)
Test#3 (Generic, ZIP)
145.16k
27.03k (x0.19)
Test#1 (Memory)
100.56k
9.28k (x0.09)
TOTAL
731.7k
197.96k (x0.27)

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
3900X
i7-7700
Test#1 (Integers)
16.95k
15.34k (x0.9)
Test#2 (FP)
25.37k
23.41k (x0.92)
Test#3 (Generic, ZIP)
9.23k
5.87k (x0.64)
Test#1 (Memory)
24.83k
11.07k (x0.45)
TOTAL
76.38k
55.69k (x0.73)

Multithread

3900X

i7-7700
Test#1 (Integers)
196.31k
62.68k (x0.32)
Test#2 (FP)
290.5k
105.24k (x0.36)
Test#3 (Generic, ZIP)
143.95k
26.35k (x0.18)
Test#1 (Memory)
64.92k
5.79k (x0.09)
TOTAL
695.69k
200.07k (x0.29)

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
3900X
i7-7700
Test#1 (Integers)
16.73k
26.7k (x1.6)
Test#2 (FP)
24.74k
23.7k (x0.96)
Test#3 (Generic, ZIP)
8.82k
5.46k (x0.62)
Test#1 (Memory)
22.22k
11.48k (x0.52)
TOTAL
72.51k
67.33k (x0.93)

Multithread

3900X

i7-7700
Test#1 (Integers)
248.24k
115.97k (x0.47)
Test#2 (FP)
309.66k
108.43k (x0.35)
Test#3 (Generic, ZIP)
140.01k
26.28k (x0.19)
Test#1 (Memory)
58.39k
6.85k (x0.12)
TOTAL
756.3k
257.52k (x0.34)

Performance/W
3900X
i7-7700
Test#1 (Integers)
2364 points/W
1784 points/W
Test#2 (FP)
2949 points/W
1668 points/W
Test#3 (Generic, ZIP)
1333 points/W
404 points/W
Test#1 (Memory)
556 points/W
105 points/W
TOTAL
7203 points/W
3962 points/W

Performance/GHz
3900X
i7-7700
Test#1 (Integers)
3638 points/GHz
6356 points/GHz
Test#2 (FP)
5377 points/GHz
5643 points/GHz
Test#3 (Generic, ZIP)
1917 points/GHz
1300 points/GHz
Test#1 (Memory)
4831 points/GHz
2733 points/GHz
TOTAL
15763 points/GHz
16032 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