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Ryzen 9 7950X vs Ryzen 7 3800X


Description
The 7950X is based on Zen 4 architecture while the 3800X is based on Zen 2.

Using the multithread performance as a reference, the 7950X gets a score of 1597.8 k points while the 3800X gets 497.7 k points.

Summarizing, the 7950X is 3.2 times faster than the 3800X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a60f12
870f10
Core
Raphael
Matisse
Architecture
Zen 4
Base frecuency
4.5 GHz
3.9 GHz
Boost frecuency
5.7 GHz
4.5 GHz
Socket
AM5
AM4
Cores/Threads
16/32
8/16
TDP
170 W
105 W
Cache L1 (d+i)
16x32+16x32 kB
8x32+8x32 kB
Cache L2
16x1024 kB
8x512 kB
Cache L3
131072 kB
32768 kB
Date
September 2022
July 2019
Mean monothread perf.
121.33k points
75.81k points
Mean multithread perf.
1597.79k points
497.74k 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
7950X
3800X
Test#1 (Integers)
6.05k
4.47k (x0.74)
Test#2 (FP)
23.41k
17.41k (x0.74)
Test#3 (Generic, ZIP)
16.49k
8.23k (x0.5)
Test#1 (Memory)
34.35k
25.15k (x0.73)
TOTAL
80.3k
55.26k (x0.69)

Multithread

7950X

3800X
Test#1 (Integers)
128.82k
36.1k (x0.28)
Test#2 (FP)
465.79k
178.65k (x0.38)
Test#3 (Generic, ZIP)
289.43k
95.98k (x0.33)
Test#1 (Memory)
75.23k
16.03k (x0.21)
TOTAL
959.27k
326.76k (x0.34)

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
7950X
3800X
Test#1 (Integers)
26.86k
16.76k (x0.62)
Test#2 (FP)
30.05k
25.16k (x0.84)
Test#3 (Generic, ZIP)
16.15k
8.76k (x0.54)
Test#1 (Memory)
31.74k
24.3k (x0.77)
TOTAL
104.8k
74.98k (x0.72)

Multithread

7950X

3800X
Test#1 (Integers)
430.6k
131.36k (x0.31)
Test#2 (FP)
545.91k
198.51k (x0.36)
Test#3 (Generic, ZIP)
289.57k
97.27k (x0.34)
Test#1 (Memory)
64.33k
13.4k (x0.21)
TOTAL
1330.41k
440.54k (x0.33)

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
7950X
3800X
Test#1 (Integers)
40.61k
17.1k (x0.42)
Test#2 (FP)
31.82k
26.59k (x0.84)
Test#3 (Generic, ZIP)
16.63k
8.91k (x0.54)
Test#1 (Memory)
32.28k
23.21k (x0.72)
TOTAL
121.33k
75.81k (x0.62)

Multithread

7950X

3800X
Test#1 (Integers)
683.17k
172.04k (x0.25)
Test#2 (FP)
563.45k
214.03k (x0.38)
Test#3 (Generic, ZIP)
286.77k
97.1k (x0.34)
Test#1 (Memory)
64.4k
14.57k (x0.23)
TOTAL
1597.79k
497.74k (x0.31)

Performance/W
7950X
3800X
Test#1 (Integers)
4019 points/W
1638 points/W
Test#2 (FP)
3314 points/W
2038 points/W
Test#3 (Generic, ZIP)
1687 points/W
925 points/W
Test#1 (Memory)
379 points/W
139 points/W
TOTAL
9399 points/W
4740 points/W

Performance/GHz
7950X
3800X
Test#1 (Integers)
7124 points/GHz
3799 points/GHz
Test#2 (FP)
5582 points/GHz
5909 points/GHz
Test#3 (Generic, ZIP)
2917 points/GHz
1981 points/GHz
Test#1 (Memory)
5663 points/GHz
5158 points/GHz
TOTAL
21286 points/GHz
16847 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