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Core i5-1235U vs i7-6500U


Description
The i5-1235U is based on Alder Lake architecture while the i7-6500U is based on Skylake.

Using the multithread performance as a reference, the i5-1235U gets a score of 297.5 k points while the i7-6500U gets 97.5 k points.

Summarizing, the i5-1235U is 3.1 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
906a4
406e3
Core
Alder Lake-U
Skylake-U
Architecture
Base frecuency
3.3 GHz
2.5 GHz
Boost frecuency
4.4 GHz
3.1 GHz
Socket
BGA 1700
BGA1356
Cores/Threads
10/12
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32/8x64+2x48/8x32 kB
2x32+2x32 kB
Cache L2
1x1280+4x2048 kB
4096 kB
Cache L3
12288 kB
kB
Date
April 2022
September 2015
Mean monothread perf.
81.64k points
46.25k points
Mean multithread perf.
297.46k points
97.52k 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
i7-6500U
Test#1 (Integers)
7.33k
2.98k (x0.41)
Test#2 (FP)
18.27k
12.19k (x0.67)
Test#3 (Generic, ZIP)
12.8k
3.91k (x0.31)
Test#1 (Memory)
13.2k
5.3k (x0.4)
TOTAL
51.61k
24.37k (x0.47)

Multithread

i5-1235U

i7-6500U
Test#1 (Integers)
29.24k
6.1k (x0.21)
Test#2 (FP)
83.32k
28.73k (x0.34)
Test#3 (Generic, ZIP)
54.53k
9.56k (x0.18)
Test#1 (Memory)
4.99k
6.71k (x1.34)
TOTAL
172.07k
51.09k (x0.3)

SSE3 optimized benchmark
The benchmark in mode I (SSE) is optimized for the use of SIMD instructions with 128 bits register and the SSE set up to version 3. Nearly every modern CPU has support for this mode.
Monothread
i5-1235U
i7-6500U
Test#1 (Integers)
23.53k
11.11k (x0.47)
Test#2 (FP)
23.51k
15.97k (x0.68)
Test#3 (Generic, ZIP)
14.71k
4.25k (x0.29)
Test#1 (Memory)
13.24k
5.66k (x0.43)
TOTAL
74.99k
36.99k (x0.49)

Multithread

i5-1235U

i7-6500U
Test#1 (Integers)
106.07k
23.1k (x0.22)
Test#2 (FP)
115.88k
36.73k (x0.32)
Test#3 (Generic, ZIP)
60.53k
9.99k (x0.17)
Test#1 (Memory)
5.88k
7k (x1.19)
TOTAL
288.36k
76.82k (x0.27)

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
i7-6500U
Test#1 (Integers)
23.03k
11.09k (x0.48)
Test#2 (FP)
24.11k
17.1k (x0.71)
Test#3 (Generic, ZIP)
13.9k
4.12k (x0.3)
Test#1 (Memory)
12.11k
5.58k (x0.46)
TOTAL
73.15k
37.9k (x0.52)

Multithread

i5-1235U

i7-6500U
Test#1 (Integers)
111.78k
23.3k (x0.21)
Test#2 (FP)
124.18k
38.52k (x0.31)
Test#3 (Generic, ZIP)
59.87k
9.95k (x0.17)
Test#1 (Memory)
5.76k
6.95k (x1.21)
TOTAL
301.58k
78.72k (x0.26)

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
i7-6500U
Test#1 (Integers)
36.73k
19.47k (x0.53)
Test#2 (FP)
22.09k
17.58k (x0.8)
Test#3 (Generic, ZIP)
11.24k
4.05k (x0.36)
Test#1 (Memory)
11.58k
5.15k (x0.45)
TOTAL
81.64k
46.25k (x0.57)

Multithread

i5-1235U

i7-6500U
Test#1 (Integers)
130.18k
42.05k (x0.32)
Test#2 (FP)
110.21k
40.2k (x0.36)
Test#3 (Generic, ZIP)
50.76k
9.4k (x0.19)
Test#1 (Memory)
6.31k
5.86k (x0.93)
TOTAL
297.46k
97.52k (x0.33)

Performance/W
i5-1235U
i7-6500U
Test#1 (Integers)
8679 points/W
2803 points/W
Test#2 (FP)
7348 points/W
2680 points/W
Test#3 (Generic, ZIP)
3384 points/W
626 points/W
Test#1 (Memory)
421 points/W
391 points/W
TOTAL
19831 points/W
6501 points/W

Performance/GHz
i5-1235U
i7-6500U
Test#1 (Integers)
8349 points/GHz
6279 points/GHz
Test#2 (FP)
5020 points/GHz
5672 points/GHz
Test#3 (Generic, ZIP)
2555 points/GHz
1305 points/GHz
Test#1 (Memory)
2631 points/GHz
1662 points/GHz
TOTAL
18555 points/GHz
14918 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