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Ryzen 9 4900HS vs Core i7-1255U


Description
The 4900HS is based on Zen 2 architecture while the i7-1255U is based on Alder Lake.

Using the multithread performance as a reference, the 4900HS gets a score of 360.6 k points while the i7-1255U gets 258.3 k points.

Summarizing, the 4900HS is 1.4 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
860f01
906a4
Core
Renoir
Alder Lake-U
Architecture
Base frecuency
3 GHz
1.7 GHz
Boost frecuency
4.3 GHz
4.7 GHz
Socket
BGA 1140
BGA 1744
Cores/Threads
8/16
10/12
TDP
35 W
15 W
Cache L1 (d+i)
8x32+8x32 kB
2x32/8x64+2x48/8x32 kB
Cache L2
8x512 kB
2x1280+2x2048 kB
Cache L3
2x4096 kB
12288 kB
Date
March 2020
February 2022
Mean monothread perf.
53k points
81.73k points
Mean multithread perf.
360.57k points
258.31k 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
i7-1255U
Test#1 (Integers)
14.87k
38.32k (x2.58)
Test#2 (FP)
21.53k
21.35k (x0.99)
Test#3 (Generic, ZIP)
8.39k
11.2k (x1.33)
Test#1 (Memory)
8.21k
10.86k (x1.32)
TOTAL
53k
81.73k (x1.54)

Multithread

4900HS

i7-1255U
Test#1 (Integers)
124.63k
105.48k (x0.85)
Test#2 (FP)
158.62k
100.18k (x0.63)
Test#3 (Generic, ZIP)
69.79k
43.39k (x0.62)
Test#1 (Memory)
7.53k
9.26k (x1.23)
TOTAL
360.57k
258.31k (x0.72)

Performance/W
4900HS
i7-1255U
Test#1 (Integers)
3561 points/W
7032 points/W
Test#2 (FP)
4532 points/W
6678 points/W
Test#3 (Generic, ZIP)
1994 points/W
2893 points/W
Test#1 (Memory)
215 points/W
617 points/W
TOTAL
10302 points/W
17221 points/W

Performance/GHz
4900HS
i7-1255U
Test#1 (Integers)
3457 points/GHz
8154 points/GHz
Test#2 (FP)
5007 points/GHz
4543 points/GHz
Test#3 (Generic, ZIP)
1952 points/GHz
2382 points/GHz
Test#1 (Memory)
1910 points/GHz
2311 points/GHz
TOTAL
12326 points/GHz
17390 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