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Ryzen 7 5800U vs Ryzen 9 5900HX


Description
Both models 5800U and 5900HX are based on Zen 3 architecture.

Zen 3 uses TSMC’s 7nm process, still uses the AM4 socket and has up yo 32MB of L3 cache per CCX.

Using the multithread performance as a reference, the 5800U gets a score of 314.5 k points while the 5900HX gets 421.1 k points.

Summarizing, the 5900HX is 1.3 times faster than the 5800U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a50f00
a50f00
Core
Cezanne
Cezanne
Architecture
Base frecuency
1.9 GHz
3.3 GHz
Boost frecuency
4.4 GHz
4.6 GHz
Socket
BGA-FP6
BGA1140-FP6
Cores/Threads
8/16
8/16
TDP
15 W
45 W
Cache L1 (d+i)
8x32+8x32 kB
8x32+8x32 kB
Cache L2
8x512 kB
8x512 kB
Cache L3
16384 kB
16384 kB
Date
January 2021
January 2021
Mean monothread perf.
71.16k points
85.76k points
Mean multithread perf.
314.55k points
421.05k 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
5800U
5900HX
Test#1 (Integers)
18.34k
23.29k (x1.27)
Test#2 (FP)
22.78k
25.89k (x1.14)
Test#3 (Generic, ZIP)
9.45k
11.75k (x1.24)
Test#1 (Memory)
20.59k
24.83k (x1.21)
TOTAL
71.16k
85.76k (x1.21)

Multithread

5800U

5900HX
Test#1 (Integers)
102.74k
138.16k (x1.34)
Test#2 (FP)
143.27k
192.12k (x1.34)
Test#3 (Generic, ZIP)
58.13k
80.84k (x1.39)
Test#1 (Memory)
10.41k
9.93k (x0.95)
TOTAL
314.55k
421.05k (x1.34)

Performance/W
5800U
5900HX
Test#1 (Integers)
6849 points/W
3070 points/W
Test#2 (FP)
9551 points/W
4269 points/W
Test#3 (Generic, ZIP)
3875 points/W
1796 points/W
Test#1 (Memory)
694 points/W
221 points/W
TOTAL
20970 points/W
9357 points/W

Performance/GHz
5800U
5900HX
Test#1 (Integers)
4168 points/GHz
5064 points/GHz
Test#2 (FP)
5178 points/GHz
5628 points/GHz
Test#3 (Generic, ZIP)
2147 points/GHz
2555 points/GHz
Test#1 (Memory)
4679 points/GHz
5398 points/GHz
TOTAL
16172 points/GHz
18644 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