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Ryzen 9 7945HX vs Core i9-12900K


Description
The 7945HX is based on Zen 4 architecture while the i9-12900K is based on Alder Lake.

Using the multithread performance as a reference, the 7945HX gets a score of 1313.9 k points while the i9-12900K gets 1131.6 k points.

Summarizing, the 7945HX is 1.2 times faster than the i9-12900K. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
a60f12
90672
Core
Dragon Range
Alder Lake
Architecture
Zen 4
Base frecuency
2.5 GHz
2.4 GHz
Boost frecuency
5.4 GHz
5.2 GHz
Socket
BGA-FL1
LGA 1700
Cores/Threads
16/32
16/24
TDP
55 W
241 W
Cache L1 (d+i)
16x32+16x32 kB
8x32/8x64+8x48/8x32 kB
Cache L2
16x1024 kB
8x1280+8x2048 kB
Cache L3
65536 kB
30720 kB
Date
January 2023
November 2021
Mean monothread perf.
113.07k points
109.05k points
Mean multithread perf.
1313.94k points
1131.59k 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
i9-12900K
Test#1 (Integers)
37.43k
47.92k (x1.28)
Test#2 (FP)
30.7k
30.1k (x0.98)
Test#3 (Generic, ZIP)
15.16k
15.65k (x1.03)
Test#1 (Memory)
29.78k
15.38k (x0.52)
TOTAL
113.07k
109.05k (x0.96)

Multithread

7945HX

i9-12900K
Test#1 (Integers)
556.68k
502.11k (x0.9)
Test#2 (FP)
482.32k
414.67k (x0.86)
Test#3 (Generic, ZIP)
225.46k
192.52k (x0.85)
Test#1 (Memory)
49.48k
22.3k (x0.45)
TOTAL
1313.94k
1131.59k (x0.86)

Performance/W
7945HX
i9-12900K
Test#1 (Integers)
10121 points/W
2083 points/W
Test#2 (FP)
8770 points/W
1721 points/W
Test#3 (Generic, ZIP)
4099 points/W
799 points/W
Test#1 (Memory)
900 points/W
93 points/W
TOTAL
23890 points/W
4695 points/W

Performance/GHz
7945HX
i9-12900K
Test#1 (Integers)
6932 points/GHz
9216 points/GHz
Test#2 (FP)
5685 points/GHz
5789 points/GHz
Test#3 (Generic, ZIP)
2807 points/GHz
3009 points/GHz
Test#1 (Memory)
5515 points/GHz
2957 points/GHz
TOTAL
20939 points/GHz
20971 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