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Core i7-7500U vs i7-6500U


Description
The i7-7500U is based on Kaby Lake architecture while the i7-6500U is based on Skylake.

Using the multithread performance as a reference, the i7-7500U gets a score of 86.9 k points while the i7-6500U gets 97.5 k points.

Summarizing, the i7-6500U is 1.1 times faster than the i7-7500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
406e3
Core
Kaby Lake-U
Skylake-U
Architecture
Base frecuency
2.7 GHz
2.5 GHz
Boost frecuency
3.5 GHz
3.1 GHz
Socket
BGA1356
BGA1356
Cores/Threads
2/4
2/4
TDP
15 W
15 W
Cache L1 (d+i)
2x32+2x32 kB
2x32+2x32 kB
Cache L2
2x256 kB
4096 kB
Cache L3
4096 kB
kB
Date
August 2016
September 2015
Mean monothread perf.
48.67k points
46.25k points
Mean multithread perf.
86.94k 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
i7-7500U
i7-6500U
Test#1 (Integers)
3.53k
2.98k (x0.84)
Test#2 (FP)
14.67k
12.19k (x0.83)
Test#3 (Generic, ZIP)
4.84k
3.91k (x0.81)
Test#1 (Memory)
6.26k
5.3k (x0.85)
TOTAL
29.29k
24.37k (x0.83)

Multithread

i7-7500U

i7-6500U
Test#1 (Integers)
7.26k
6.1k (x0.84)
Test#2 (FP)
35.04k
28.73k (x0.82)
Test#3 (Generic, ZIP)
11.28k
9.56k (x0.85)
Test#1 (Memory)
5.69k
6.71k (x1.18)
TOTAL
59.27k
51.09k (x0.86)

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
i7-7500U
i7-6500U
Test#1 (Integers)
12.93k
11.11k (x0.86)
Test#2 (FP)
18.63k
15.97k (x0.86)
Test#3 (Generic, ZIP)
5.03k
4.25k (x0.84)
Test#1 (Memory)
6.16k
5.66k (x0.92)
TOTAL
42.75k
36.99k (x0.87)

Multithread

i7-7500U

i7-6500U
Test#1 (Integers)
27.13k
23.1k (x0.85)
Test#2 (FP)
43.19k
36.73k (x0.85)
Test#3 (Generic, ZIP)
11.7k
9.99k (x0.85)
Test#1 (Memory)
4.99k
7k (x1.4)
TOTAL
87.02k
76.82k (x0.88)

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
i7-7500U
i7-6500U
Test#1 (Integers)
12.71k
11.09k (x0.87)
Test#2 (FP)
18.61k
17.1k (x0.92)
Test#3 (Generic, ZIP)
4.78k
4.12k (x0.86)
Test#1 (Memory)
6.63k
5.58k (x0.84)
TOTAL
42.72k
37.9k (x0.89)

Multithread

i7-7500U

i7-6500U
Test#1 (Integers)
27.27k
23.3k (x0.85)
Test#2 (FP)
44.7k
38.52k (x0.86)
Test#3 (Generic, ZIP)
11.33k
9.95k (x0.88)
Test#1 (Memory)
5.55k
6.95k (x1.25)
TOTAL
88.86k
78.72k (x0.89)

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
i7-7500U
i7-6500U
Test#1 (Integers)
20.74k
19.47k (x0.94)
Test#2 (FP)
18.41k
17.58k (x0.96)
Test#3 (Generic, ZIP)
3.98k
4.05k (x1.02)
Test#1 (Memory)
5.54k
5.15k (x0.93)
TOTAL
48.67k
46.25k (x0.95)

Multithread

i7-7500U

i7-6500U
Test#1 (Integers)
37.34k
42.05k (x1.13)
Test#2 (FP)
35.79k
40.2k (x1.12)
Test#3 (Generic, ZIP)
8.34k
9.4k (x1.13)
Test#1 (Memory)
5.48k
5.86k (x1.07)
TOTAL
86.94k
97.52k (x1.12)

Performance/W
i7-7500U
i7-6500U
Test#1 (Integers)
2489 points/W
2803 points/W
Test#2 (FP)
2386 points/W
2680 points/W
Test#3 (Generic, ZIP)
556 points/W
626 points/W
Test#1 (Memory)
365 points/W
391 points/W
TOTAL
5796 points/W
6501 points/W

Performance/GHz
i7-7500U
i7-6500U
Test#1 (Integers)
5926 points/GHz
6279 points/GHz
Test#2 (FP)
5260 points/GHz
5672 points/GHz
Test#3 (Generic, ZIP)
1137 points/GHz
1305 points/GHz
Test#1 (Memory)
1584 points/GHz
1662 points/GHz
TOTAL
13907 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