Core i7-1255U vs i5-11400
Description
The i7-1255U is based on Alder Lake architecture while the i5-11400 is based on Rocket Lake.
Using the multithread performance as a reference, the i7-1255U gets a score of 258.3 k points while the i5-11400 gets 489.3 k points.
Summarizing, the i5-11400 is 1.9 times faster than the i7-1255U. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i7-1255U gets a score of 258.3 k points while the i5-11400 gets 489.3 k points.
Summarizing, the i5-11400 is 1.9 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
a0671
Core
Alder Lake-U
Rocket Lake-S
Base frecuency
1.7 GHz
2.6 GHz
Boost frecuency
4.7 GHz
4.4 GHz
Socket
BGA 1744
LGA 1200
Cores/Threads
10/12
6/12
TDP
15 W
65 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
6x32+6x48 kB
Cache L2
2x1280+2x2048 kB
6x512 kB
Cache L3
12288 kB
12288 kB
Date
February 2022
March 2021
Mean monothread perf.
81.73k points
86.11k points
Mean multithread perf.
258.31k points
489.31k 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
i7-1255U
i5-11400
Test#1 (Integers)
38.32k
31.23k (x0.81)
Test#2 (FP)
21.35k
25.88k (x1.21)
Test#3 (Generic, ZIP)
11.2k
10.83k (x0.97)
Test#1 (Memory)
10.86k
18.17k (x1.67)
TOTAL
81.73k
86.11k (x1.05)
Multithread
i7-1255U
i5-11400
Test#1 (Integers)
105.48k
213.85k (x2.03)
Test#2 (FP)
100.18k
195.51k (x1.95)
Test#3 (Generic, ZIP)
43.39k
72.06k (x1.66)
Test#1 (Memory)
9.26k
7.89k (x0.85)
TOTAL
258.31k
489.31k (x1.89)
Performance/W
i7-1255U
i5-11400
Test#1 (Integers)
7032 points/W
3290 points/W
Test#2 (FP)
6678 points/W
3008 points/W
Test#3 (Generic, ZIP)
2893 points/W
1109 points/W
Test#1 (Memory)
617 points/W
121 points/W
TOTAL
17221 points/W
7528 points/W
Performance/GHz
i7-1255U
i5-11400
Test#1 (Integers)
8154 points/GHz
7098 points/GHz
Test#2 (FP)
4543 points/GHz
5881 points/GHz
Test#3 (Generic, ZIP)
2382 points/GHz
2461 points/GHz
Test#1 (Memory)
2311 points/GHz
4130 points/GHz
TOTAL
17390 points/GHz
19570 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