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Ryzen 7 4700U vs Ryzen 9 4900HS


Description
Both models 4700U and 4900HS 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 4700U gets a score of 269.6 k points while the 4900HS gets 360.6 k points.

Summarizing, the 4900HS is 1.3 times faster than the 4700U. 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
2 GHz
3 GHz
Boost frecuency
4.1 GHz
4.3 GHz
Socket
BGA-FP6
BGA 1140
Cores/Threads
8/8
8/16
TDP
15 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x512 kB
8x512 kB
Cache L3
2x4096 kB
2x4096 kB
Date
January 2020
March 2020
Mean monothread perf.
49.53k points
53k points
Mean multithread perf.
269.56k points
360.57k 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
4700U
4900HS
Test#1 (Integers)
10.38k
14.87k (x1.43)
Test#2 (FP)
22.63k
21.53k (x0.95)
Test#3 (Generic, ZIP)
8.52k
8.39k (x0.99)
Test#1 (Memory)
7.99k
8.21k (x1.03)
TOTAL
49.53k
53k (x1.07)

Multithread

4700U

4900HS
Test#1 (Integers)
86.74k
124.63k (x1.44)
Test#2 (FP)
128.69k
158.62k (x1.23)
Test#3 (Generic, ZIP)
48.71k
69.79k (x1.43)
Test#1 (Memory)
5.41k
7.53k (x1.39)
TOTAL
269.56k
360.57k (x1.34)

Performance/W
4700U
4900HS
Test#1 (Integers)
5783 points/W
3561 points/W
Test#2 (FP)
8579 points/W
4532 points/W
Test#3 (Generic, ZIP)
3248 points/W
1994 points/W
Test#1 (Memory)
360 points/W
215 points/W
TOTAL
17970 points/W
10302 points/W

Performance/GHz
4700U
4900HS
Test#1 (Integers)
2533 points/GHz
3457 points/GHz
Test#2 (FP)
5520 points/GHz
5007 points/GHz
Test#3 (Generic, ZIP)
2078 points/GHz
1952 points/GHz
Test#1 (Memory)
1949 points/GHz
1910 points/GHz
TOTAL
12080 points/GHz
12326 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