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Core i7-6700HQ vs i7-6500U


Description
Both models i7-6700HQ and i7-6500U are based on Skylake architecture.

Sky Lake is also known as 6th generation Core. Include Thunderbolt 3.0, SATA Express and Iris Pro graphics with DirectX 12. It uses LGA 1151 socket for mainstream models and LGA 2066 for X-Series. Sky Lake comes with AVX2 support in all mainstreams CPUs and AVX-512 in some high end models.

Using the multithread performance as a reference, the i7-6700HQ gets a score of 205.2 k points while the i7-6500U gets 97.5 k points.

Summarizing, the i7-6700HQ is 2.1 times faster than the i7-6500U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
406e3
Core
Skylake-H
Skylake-U
Architecture
Base frecuency
2.6 GHz
2.5 GHz
Boost frecuency
3.5 GHz
3.1 GHz
Socket
BGA1440
BGA1356
Cores/Threads
4/8
2/4
TDP
45 W
15 W
Cache L1 (d+i)
4x32+4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
4096 kB
Cache L3
6144 kB
kB
Date
September 2015
Mean monothread perf.
50.54k points
46.25k points
Mean multithread perf.
205.24k points
97.52k 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
i7-6700HQ
i7-6500U
Test#1 (Integers)
11.23k
11.09k (x0.99)
Test#2 (FP)
16.98k
17.1k (x1.01)
Test#3 (Generic, ZIP)
4.21k
4.12k (x0.98)
Test#1 (Memory)
7.07k
5.58k (x0.79)
TOTAL
39.49k
37.9k (x0.96)

Multithread

i7-6700HQ

i7-6500U
Test#1 (Integers)
44.59k
23.3k (x0.52)
Test#2 (FP)
75.02k
38.52k (x0.51)
Test#3 (Generic, ZIP)
20.15k
9.95k (x0.49)
Test#1 (Memory)
5.92k
6.95k (x1.17)
TOTAL
145.68k
78.72k (x0.54)

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
i7-6700HQ
i7-6500U
Test#1 (Integers)
21.33k
19.47k (x0.91)
Test#2 (FP)
18.34k
17.58k (x0.96)
Test#3 (Generic, ZIP)
4.44k
4.05k (x0.91)
Test#1 (Memory)
6.44k
5.15k (x0.8)
TOTAL
50.54k
46.25k (x0.91)

Multithread

i7-6700HQ

i7-6500U
Test#1 (Integers)
91.89k
42.05k (x0.46)
Test#2 (FP)
87.87k
40.2k (x0.46)
Test#3 (Generic, ZIP)
20.61k
9.4k (x0.46)
Test#1 (Memory)
4.87k
5.86k (x1.2)
TOTAL
205.24k
97.52k (x0.48)

Performance/W
i7-6700HQ
i7-6500U
Test#1 (Integers)
2042 points/W
2803 points/W
Test#2 (FP)
1953 points/W
2680 points/W
Test#3 (Generic, ZIP)
458 points/W
626 points/W
Test#1 (Memory)
108 points/W
391 points/W
TOTAL
4561 points/W
6501 points/W

Performance/GHz
i7-6700HQ
i7-6500U
Test#1 (Integers)
6094 points/GHz
6279 points/GHz
Test#2 (FP)
5240 points/GHz
5672 points/GHz
Test#3 (Generic, ZIP)
1267 points/GHz
1305 points/GHz
Test#1 (Memory)
1840 points/GHz
1662 points/GHz
TOTAL
14441 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