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Ryzen 9 7945HX vs 5900X


Description
The 7945HX is based on Zen 4 architecture while the 5900X is based on Zen 3.

Using the multithread performance as a reference, the 7945HX gets a score of 1313.9 k points while the 5900X gets 840.1 k points.

Summarizing, the 7945HX is 1.6 times faster than the 5900X. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a60f12
a20f10
Core
Dragon Range
Vermeer
Architecture
Zen 4
Base frecuency
2.5 GHz
3.7 GHz
Boost frecuency
5.4 GHz
4.8 GHz
Socket
BGA-FL1
AM4
Cores/Threads
16/32
12/24
TDP
55 W
105 W
Cache L1 (d+i)
16x32+16x32 kB
12x32+12x32 kB
Cache L2
16x1024 kB
12x512 kB
Cache L3
65536 kB
2x32768 kB
Date
January 2023
November 2020
Mean monothread perf.
113.07k points
89.82k points
Mean multithread perf.
1313.94k points
840.11k 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
7945HX
5900X
Test#1 (Integers)
37.43k
24.34k (x0.65)
Test#2 (FP)
30.7k
26.8k (x0.87)
Test#3 (Generic, ZIP)
15.16k
12.12k (x0.8)
Test#1 (Memory)
29.78k
26.55k (x0.89)
TOTAL
113.07k
89.82k (x0.79)

Multithread

7945HX

5900X
Test#1 (Integers)
556.68k
263.12k (x0.47)
Test#2 (FP)
482.32k
353.9k (x0.73)
Test#3 (Generic, ZIP)
225.46k
159.07k (x0.71)
Test#1 (Memory)
49.48k
64.01k (x1.29)
TOTAL
1313.94k
840.11k (x0.64)

Performance/W
7945HX
5900X
Test#1 (Integers)
10121 points/W
2506 points/W
Test#2 (FP)
8770 points/W
3371 points/W
Test#3 (Generic, ZIP)
4099 points/W
1515 points/W
Test#1 (Memory)
900 points/W
610 points/W
TOTAL
23890 points/W
8001 points/W

Performance/GHz
7945HX
5900X
Test#1 (Integers)
6932 points/GHz
5071 points/GHz
Test#2 (FP)
5685 points/GHz
5584 points/GHz
Test#3 (Generic, ZIP)
2807 points/GHz
2526 points/GHz
Test#1 (Memory)
5515 points/GHz
5530 points/GHz
TOTAL
20939 points/GHz
18712 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