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Core i5-1235U vs i7-8650U


Description
The i5-1235U is based on Alder Lake architecture while the i7-8650U 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 i7-8650U gets 173.5 k points.

Summarizing, the i5-1235U is 1.7 times faster than the i7-8650U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906a4
806ea
Core
Alder Lake-U
Kaby Lake-R
Architecture
Base frecuency
3.3 GHz
1.9 GHz
Boost frecuency
4.4 GHz
4.2 GHz
Socket
BGA 1700
BGA 1356
Cores/Threads
10/12
4/8
TDP
15 W
15 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
4x32+4x32 kB
Cache L2
1x1280+4x2048 kB
4x256 kB
Cache L3
12288 kB
8192 kB
Date
April 2022
August 2017
Mean monothread perf.
81.64k points
55.86k points
Mean multithread perf.
297.46k points
173.49k 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
i5-1235U
i7-8650U
Test#1 (Integers)
36.73k
21.61k (x0.59)
Test#2 (FP)
22.09k
19.69k (x0.89)
Test#3 (Generic, ZIP)
11.24k
4.61k (x0.41)
Test#1 (Memory)
11.58k
9.95k (x0.86)
TOTAL
81.64k
55.86k (x0.68)

Multithread

i5-1235U

i7-8650U
Test#1 (Integers)
130.18k
78.38k (x0.6)
Test#2 (FP)
110.21k
72.02k (x0.65)
Test#3 (Generic, ZIP)
50.76k
16.95k (x0.33)
Test#1 (Memory)
6.31k
6.15k (x0.97)
TOTAL
297.46k
173.49k (x0.58)

Performance/W
i5-1235U
i7-8650U
Test#1 (Integers)
8679 points/W
5225 points/W
Test#2 (FP)
7348 points/W
4802 points/W
Test#3 (Generic, ZIP)
3384 points/W
1130 points/W
Test#1 (Memory)
421 points/W
410 points/W
TOTAL
19831 points/W
11566 points/W

Performance/GHz
i5-1235U
i7-8650U
Test#1 (Integers)
8349 points/GHz
5146 points/GHz
Test#2 (FP)
5020 points/GHz
4689 points/GHz
Test#3 (Generic, ZIP)
2555 points/GHz
1097 points/GHz
Test#1 (Memory)
2631 points/GHz
2368 points/GHz
TOTAL
18555 points/GHz
13300 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