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Core i5-1135G7 vs i7-1255U


Description
The i5-1135G7 is based on Tiger Lake architecture while the i7-1255U is based on Alder Lake.

Using the multithread performance as a reference, the i5-1135G7 gets a score of 237.5 k points while the i7-1255U gets 258.3 k points.

Summarizing, the i7-1255U is 1.1 times faster than the i5-1135G7. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806c1
906a4
Core
Tiger Lake UP3
Alder Lake-U
Architecture
Base frecuency
2.4 GHz
1.7 GHz
Boost frecuency
4.2 GHz
4.7 GHz
Socket
BGA 1449
BGA 1744
Cores/Threads
4/8
10/12
TDP
28 W
15 W
Cache L1 (d+i)
4x32+4x48 kB
2x32/8x64+2x48/8x32 kB
Cache L2
4x1280 kB
2x1280+2x2048 kB
Cache L3
8192 kB
12288 kB
Date
September 2020
February 2022
Mean monothread perf.
68.08k points
81.73k points
Mean multithread perf.
237.55k 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
i5-1135G7
i7-1255U
Test#1 (Integers)
25.91k
38.32k (x1.48)
Test#2 (FP)
23.39k
21.35k (x0.91)
Test#3 (Generic, ZIP)
10.08k
11.2k (x1.11)
Test#1 (Memory)
8.7k
10.86k (x1.25)
TOTAL
68.08k
81.73k (x1.2)

Multithread

i5-1135G7

i7-1255U
Test#1 (Integers)
94.51k
105.48k (x1.12)
Test#2 (FP)
99.21k
100.18k (x1.01)
Test#3 (Generic, ZIP)
33.35k
43.39k (x1.3)
Test#1 (Memory)
10.47k
9.26k (x0.88)
TOTAL
237.55k
258.31k (x1.09)

Performance/W
i5-1135G7
i7-1255U
Test#1 (Integers)
3375 points/W
7032 points/W
Test#2 (FP)
3543 points/W
6678 points/W
Test#3 (Generic, ZIP)
1191 points/W
2893 points/W
Test#1 (Memory)
374 points/W
617 points/W
TOTAL
8484 points/W
17221 points/W

Performance/GHz
i5-1135G7
i7-1255U
Test#1 (Integers)
6169 points/GHz
8154 points/GHz
Test#2 (FP)
5569 points/GHz
4543 points/GHz
Test#3 (Generic, ZIP)
2401 points/GHz
2382 points/GHz
Test#1 (Memory)
2071 points/GHz
2311 points/GHz
TOTAL
16210 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