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Core i5-1235U vs i5-7400


Description
The i5-1235U is based on Alder Lake architecture while the i5-7400 is based on Kaby Lake.

Using the multithread performance as a reference, the i5-1235U gets a score of 297.5 k points while the i5-7400 gets 173.7 k points.

Summarizing, the i5-1235U is 1.7 times faster than the i5-7400 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906a4
906e9
Core
Alder Lake-U
Kaby Lake-S
Architecture
Base frecuency
3.3 GHz
3 GHz
Boost frecuency
4.4 GHz
3.5 GHz
Socket
BGA 1700
LGA 1151
Cores/Threads
10/12
4/4
TDP
15 W
65 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
4x32+4x32 kB
Cache L2
1x1280+4x2048 kB
4x256 kB
Cache L3
12288 kB
6144 kB
Date
April 2022
September 2016
Mean monothread perf.
81.64k points
52.69k points
Mean multithread perf.
297.46k points
173.7k points

AVX optimized benchmark
The benchmark in mode II (AVX) is optimized to used 256 bits registers beside the first version of the Advanced Vector Extensions (AVX). The first AVX compatible CPU was released in 2011.
Monothread
i5-1235U
i5-7400
Test#1 (Integers)
23.03k
12.72k (x0.55)
Test#2 (FP)
24.11k
19.3k (x0.8)
Test#3 (Generic, ZIP)
13.9k
4.76k (x0.34)
Test#1 (Memory)
12.11k
8.73k (x0.72)
TOTAL
73.15k
45.52k (x0.62)

Multithread

i5-1235U

i5-7400
Test#1 (Integers)
111.78k
47.95k (x0.43)
Test#2 (FP)
124.18k
71.98k (x0.58)
Test#3 (Generic, ZIP)
59.87k
17.22k (x0.29)
Test#1 (Memory)
5.76k
8.03k (x1.39)
TOTAL
301.58k
145.18k (x0.48)

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
i5-1235U
i5-7400
Test#1 (Integers)
36.73k
22.37k (x0.61)
Test#2 (FP)
22.09k
19.46k (x0.88)
Test#3 (Generic, ZIP)
11.24k
4.44k (x0.39)
Test#1 (Memory)
11.58k
6.41k (x0.55)
TOTAL
81.64k
52.69k (x0.65)

Multithread

i5-1235U

i5-7400
Test#1 (Integers)
130.18k
79.57k (x0.61)
Test#2 (FP)
110.21k
71.41k (x0.65)
Test#3 (Generic, ZIP)
50.76k
16.44k (x0.32)
Test#1 (Memory)
6.31k
6.27k (x0.99)
TOTAL
297.46k
173.7k (x0.58)

Performance/W
i5-1235U
i5-7400
Test#1 (Integers)
8679 points/W
1224 points/W
Test#2 (FP)
7348 points/W
1099 points/W
Test#3 (Generic, ZIP)
3384 points/W
253 points/W
Test#1 (Memory)
421 points/W
96 points/W
TOTAL
19831 points/W
2672 points/W

Performance/GHz
i5-1235U
i5-7400
Test#1 (Integers)
8349 points/GHz
6392 points/GHz
Test#2 (FP)
5020 points/GHz
5561 points/GHz
Test#3 (Generic, ZIP)
2555 points/GHz
1267 points/GHz
Test#1 (Memory)
2631 points/GHz
1832 points/GHz
TOTAL
18555 points/GHz
15053 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