Core i5-1235U vs i5-8400
Description
The i5-1235U is based on Alder Lake architecture while the i5-8400 is based on Coffee Lake.
Using the multithread performance as a reference, the i5-1235U gets a score of 297.5 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-1235U is 1 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.
Using the multithread performance as a reference, the i5-1235U gets a score of 297.5 k points while the i5-8400 gets 289.6 k points.
Summarizing, the i5-1235U is 1 times faster than the i5-8400. To get a proper comparison between both models, take a look to the data shown below.
Specs
CPUID
906a4
906ea
Core
Alder Lake-U
Coffee Lake-S
Base frecuency
3.3 GHz
2.8 GHz
Boost frecuency
4.4 GHz
4 GHz
Socket
BGA 1700
LGA 1151
Cores/Threads
10/12
6/6
TDP
15 W
65 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
6x32+6x32 kB
Cache L2
1x1280+4x2048 kB
6x256 kB
Cache L3
12288 kB
9216 kB
Date
April 2022
September 2017
Mean monothread perf.
81.64k points
64.98k points
Mean multithread perf.
297.46k points
289.61k points
Non-optimized benchmark
The benchmark in Mode 0 (FPU) measures cpu performance with non-optimized software. It uses the basic µinstructions from the i386 architecture with the i387 floating point unit. This mode is compatible with all CPUs so it's practical to compare very different CPUs
Monothread
i5-1235U
i5-8400
Test#1 (Integers)
7.33k
4.08k (x0.56)
Test#2 (FP)
18.27k
14.96k (x0.82)
Test#3 (Generic, ZIP)
12.8k
4.98k (x0.39)
Test#1 (Memory)
13.2k
10.29k (x0.78)
TOTAL
51.61k
34.31k (x0.66)
Multithread
i5-1235U
i5-8400
Test#1 (Integers)
29.24k
21.54k (x0.74)
Test#2 (FP)
83.32k
85.13k (x1.02)
Test#3 (Generic, ZIP)
54.53k
28.24k (x0.52)
Test#1 (Memory)
4.99k
4.08k (x0.82)
TOTAL
172.07k
139k (x0.81)
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
i5-8400
Test#1 (Integers)
36.73k
26.5k (x0.72)
Test#2 (FP)
22.09k
23.11k (x1.05)
Test#3 (Generic, ZIP)
11.24k
5.2k (x0.46)
Test#1 (Memory)
11.58k
10.16k (x0.88)
TOTAL
81.64k
64.98k (x0.8)
Multithread
i5-1235U
i5-8400
Test#1 (Integers)
130.18k
135.08k (x1.04)
Test#2 (FP)
110.21k
121.49k (x1.1)
Test#3 (Generic, ZIP)
50.76k
27.53k (x0.54)
Test#1 (Memory)
6.31k
5.5k (x0.87)
TOTAL
297.46k
289.61k (x0.97)
Performance/W
i5-1235U
i5-8400
Test#1 (Integers)
8679 points/W
2078 points/W
Test#2 (FP)
7348 points/W
1869 points/W
Test#3 (Generic, ZIP)
3384 points/W
424 points/W
Test#1 (Memory)
421 points/W
85 points/W
TOTAL
19831 points/W
4455 points/W
Performance/GHz
i5-1235U
i5-8400
Test#1 (Integers)
8349 points/GHz
6626 points/GHz
Test#2 (FP)
5020 points/GHz
5778 points/GHz
Test#3 (Generic, ZIP)
2555 points/GHz
1300 points/GHz
Test#1 (Memory)
2631 points/GHz
2541 points/GHz
TOTAL
18555 points/GHz
16245 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