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Ryzen 9 4900HS vs Ryzen 7 4800U


Description
Both models 4900HS and 4800U 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 4900HS gets a score of 360.6 k points while the 4800U gets 356.8 k points.

Summarizing, the 4900HS is 1 times faster than the 4800U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
860f01
860f01
Core
Renoir
Renoir
Architecture
Base frecuency
3 GHz
1.8 GHz
Boost frecuency
4.3 GHz
4.2 GHz
Socket
BGA 1140
BGA 1140
Cores/Threads
8/16
8/16
TDP
35 W
15 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x512 kB
8x512 kB
Cache L3
2x4096 kB
2x4096 kB
Date
March 2020
January 2020
Mean monothread perf.
53k points
57.92k points
Mean multithread perf.
360.57k points
356.81k 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
4900HS
4800U
Test#1 (Integers)
14.87k
16.53k (x1.11)
Test#2 (FP)
21.53k
24.67k (x1.15)
Test#3 (Generic, ZIP)
8.39k
9.04k (x1.08)
Test#1 (Memory)
8.21k
7.68k (x0.93)
TOTAL
53k
57.92k (x1.09)

Multithread

4900HS

4800U
Test#1 (Integers)
124.63k
121.96k (x0.98)
Test#2 (FP)
158.62k
162.82k (x1.03)
Test#3 (Generic, ZIP)
69.79k
68.25k (x0.98)
Test#1 (Memory)
7.53k
3.79k (x0.5)
TOTAL
360.57k
356.81k (x0.99)

Performance/W
4900HS
4800U
Test#1 (Integers)
3561 points/W
8131 points/W
Test#2 (FP)
4532 points/W
10854 points/W
Test#3 (Generic, ZIP)
1994 points/W
4550 points/W
Test#1 (Memory)
215 points/W
252 points/W
TOTAL
10302 points/W
23788 points/W

Performance/GHz
4900HS
4800U
Test#1 (Integers)
3457 points/GHz
3936 points/GHz
Test#2 (FP)
5007 points/GHz
5873 points/GHz
Test#3 (Generic, ZIP)
1952 points/GHz
2153 points/GHz
Test#1 (Memory)
1910 points/GHz
1828 points/GHz
TOTAL
12326 points/GHz
13790 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