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Ryzen 9 3900 vs Ryzen 7 4800H


Description
Both models 3900 and 4800H are based on Zen 2 architecture.

Zen 2 is fabricated on the 7nm process from TSMC and it’s the third generation of Zen CPUs. It comes with 64kB of L1 cache and 512kB of L2 cache per core. Zen 2 CPUs are divided into 3 categories: Matisse (desktop), Rome (Server) and Castle Peak (high-end desktop).

Using the multithread performance as a reference, the 3900 gets a score of 687.5 k points while the 4800H gets 436.8 k points.

Summarizing, the 3900 is 1.6 times faster than the 4800H. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
870f10
860f01
Core
Matisse
Renoir
Architecture
Base frecuency
3.1 GHz
2.9 GHz
Boost frecuency
4.3 GHz
4.2 GHz
Socket
AM4
BGA-FP6
Cores/Threads
12/24
8/16
TDP
65 W
45 W
Cache L1 (d+i)
12x32+12x32 kB
8x32+8x32 kB
Cache L2
12x512 kB
8x512 kB
Cache L3
4x16384 kB
2x4096 kB
Date
September 2019
January 2020
Mean monothread perf.
74.97k points
57.47k points
Mean multithread perf.
687.5k points
436.8k 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
3900
4800H
Test#1 (Integers)
16.85k
16.59k (x0.98)
Test#2 (FP)
26.03k
23.51k (x0.9)
Test#3 (Generic, ZIP)
9.54k
9.38k (x0.98)
Test#1 (Memory)
22.55k
7.98k (x0.35)
TOTAL
74.97k
57.47k (x0.77)

Multithread

3900

4800H
Test#1 (Integers)
229.41k
152.43k (x0.66)
Test#2 (FP)
292.81k
195.79k (x0.67)
Test#3 (Generic, ZIP)
128.48k
83.2k (x0.65)
Test#1 (Memory)
36.8k
5.38k (x0.15)
TOTAL
687.5k
436.8k (x0.64)

Performance/W
3900
4800H
Test#1 (Integers)
3529 points/W
3387 points/W
Test#2 (FP)
4505 points/W
4351 points/W
Test#3 (Generic, ZIP)
1977 points/W
1849 points/W
Test#1 (Memory)
566 points/W
120 points/W
TOTAL
10577 points/W
9707 points/W

Performance/GHz
3900
4800H
Test#1 (Integers)
3920 points/GHz
3950 points/GHz
Test#2 (FP)
6054 points/GHz
5599 points/GHz
Test#3 (Generic, ZIP)
2218 points/GHz
2234 points/GHz
Test#1 (Memory)
5243 points/GHz
1899 points/GHz
TOTAL
17435 points/GHz
13683 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