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Core i7-3687U vs i7-6820HQ


Description
The i7-3687U is based on Ivy Bridge architecture while the i7-6820HQ is based on Skylake.

Using the multithread performance as a reference, the i7-3687U gets a score of 51 k points while the i7-6820HQ gets 159.7 k points.

Summarizing, the i7-6820HQ is 3.1 times faster than the i7-3687U . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306a9
506e3
Core
Ivy Bridge
Skylake-H
Architecture
Base frecuency
2.1 GHz
2.7 GHz
Boost frecuency
3.3 GHz
3.6 GHz
Socket
BGA1023
BGA1440
Cores/Threads
2 /4
4/8
TDP
17 W
45 W
Cache L1 (d+i)
2x32+2x32 kB
4x32+4x32 kB
Cache L2
2x256 kB
4x256 kB
Cache L3
4096 kB
8192 kB
Date
January 2013
October 2015
Mean monothread perf.
28.55k points
50.1k points
Mean multithread perf.
50.95k points
205.89k 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
i7-3687U
i7-6820HQ
Test#1 (Integers)
10.17k
11.78k (x1.16)
Test#2 (FP)
10.16k
18.06k (x1.78)
Test#3 (Generic, ZIP)
3.86k
4.48k (x1.16)
Test#1 (Memory)
4.36k
7.12k (x1.63)
TOTAL
28.55k
41.44k (x1.45)

Multithread

i7-3687U

i7-6820HQ
Test#1 (Integers)
17.48k
49.46k (x2.83)
Test#2 (FP)
21.1k
84.8k (x4.02)
Test#3 (Generic, ZIP)
7.81k
20.7k (x2.65)
Test#1 (Memory)
4.57k
4.77k (x1.04)
TOTAL
50.95k
159.73k (x3.13)

Performance/W
i7-3687U
i7-6820HQ
Test#1 (Integers)
1028 points/W
1099 points/W
Test#2 (FP)
1241 points/W
1884 points/W
Test#3 (Generic, ZIP)
460 points/W
460 points/W
Test#1 (Memory)
269 points/W
106 points/W
TOTAL
2997 points/W
3550 points/W

Performance/GHz
i7-3687U
i7-6820HQ
Test#1 (Integers)
3082 points/GHz
3273 points/GHz
Test#2 (FP)
3078 points/GHz
5016 points/GHz
Test#3 (Generic, ZIP)
1170 points/GHz
1244 points/GHz
Test#1 (Memory)
1320 points/GHz
1977 points/GHz
TOTAL
8650 points/GHz
11510 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