Core i7-1255U vs i5-1235U
Description
Both models i7-1255U and i5-1235U are based on Alder Lake architecture.
Alder Lake is the 12th generation of Intel Core. It uses the 10nm proccess and was the first to introduce a hybrid architecture with Performance cores and Efficiency cores.
Using the multithread performance as a reference, the i7-1255U gets a score of 258.3 k points while the i5-1235U gets 297.5 k points.
Summarizing, the i5-1235U is 1.2 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.
Alder Lake is the 12th generation of Intel Core. It uses the 10nm proccess and was the first to introduce a hybrid architecture with Performance cores and Efficiency cores.
Using the multithread performance as a reference, the i7-1255U gets a score of 258.3 k points while the i5-1235U gets 297.5 k points.
Summarizing, the i5-1235U is 1.2 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906a4
906a4
Core
Alder Lake-U
Alder Lake-U
Base frecuency
1.7 GHz
3.3 GHz
Boost frecuency
4.7 GHz
4.4 GHz
Socket
BGA 1744
BGA 1700
Cores/Threads
10/12
10/12
TDP
15 W
15 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
2x32/8x64+2x48/8x32 kB
Cache L2
2x1280+2x2048 kB
1x1280+4x2048 kB
Cache L3
12288 kB
12288 kB
Date
February 2022
April 2022
Mean monothread perf.
81.73k points
81.64k points
Mean multithread perf.
258.31k points
297.46k 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
i7-1255U
i5-1235U
Test#1 (Integers)
38.32k
36.73k (x0.96)
Test#2 (FP)
21.35k
22.09k (x1.03)
Test#3 (Generic, ZIP)
11.2k
11.24k (x1)
Test#1 (Memory)
10.86k
11.58k (x1.07)
TOTAL
81.73k
81.64k (x1)
Multithread
i7-1255U
i5-1235U
Test#1 (Integers)
105.48k
130.18k (x1.23)
Test#2 (FP)
100.18k
110.21k (x1.1)
Test#3 (Generic, ZIP)
43.39k
50.76k (x1.17)
Test#1 (Memory)
9.26k
6.31k (x0.68)
TOTAL
258.31k
297.46k (x1.15)
Performance/W
i7-1255U
i5-1235U
Test#1 (Integers)
7032 points/W
8679 points/W
Test#2 (FP)
6678 points/W
7348 points/W
Test#3 (Generic, ZIP)
2893 points/W
3384 points/W
Test#1 (Memory)
617 points/W
421 points/W
TOTAL
17221 points/W
19831 points/W
Performance/GHz
i7-1255U
i5-1235U
Test#1 (Integers)
8154 points/GHz
8349 points/GHz
Test#2 (FP)
4543 points/GHz
5020 points/GHz
Test#3 (Generic, ZIP)
2382 points/GHz
2555 points/GHz
Test#1 (Memory)
2311 points/GHz
2631 points/GHz
TOTAL
17390 points/GHz
18555 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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
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.
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]
Test#2 (FP) [points vs time]
Test#3 (Generic, ZIP) [points vs time]
Test#1 (Memory) [points vs time]
Hardlimit Benchmark Central - Ver. 3.11.4