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Core i7-6820HQ vs Xeon E5-2680 v2


Description
The i7-6820HQ is based on Skylake architecture while the E5-2680 v2 is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 159.7 k points while the E5-2680 v2 gets 551.1 k points.

Summarizing, the E5-2680 v2 is 3.5 times faster than the i7-6820HQ. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306e4
Core
Skylake-H
Ivy Bridge-EP
Architecture
Base frecuency
2.7 GHz
2.8 GHz
Boost frecuency
3.6 GHz
3.6 GHz
Socket
BGA1440
LGA 2011
Cores/Threads
4/8
10 /20
TDP
45 W
115 W
Cache L1 (d+i)
4x32+4x32 kB
10x32+10x32 kB
Cache L2
4x256 kB
10x256 kB
Cache L3
8192 kB
25600 kB
Date
October 2015
September 2013
Mean monothread perf.
50.1k points
28.23k points
Mean multithread perf.
205.89k points
551.1k points

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
i7-6820HQ
E5-2680 v2
Test#1 (Integers)
11.54k
11.96k (x1.04)
Test#2 (FP)
16.69k
10.73k (x0.64)
Test#3 (Generic, ZIP)
4.51k
4.59k (x1.02)
Test#1 (Memory)
7.27k
4.31k (x0.59)
TOTAL
40.01k
31.6k (x0.79)

Multithread

i7-6820HQ

E5-2680 v2
Test#1 (Integers)
48.5k
218.24k (x4.5)
Test#2 (FP)
77.02k
206.92k (x2.69)
Test#3 (Generic, ZIP)
21.3k
100.37k (x4.71)
Test#1 (Memory)
5.24k
11.45k (x2.18)
TOTAL
152.06k
536.99k (x3.53)

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
i7-6820HQ
E5-2680 v2
Test#1 (Integers)
11.78k
10.55k (x0.9)
Test#2 (FP)
18.06k
10.02k (x0.56)
Test#3 (Generic, ZIP)
4.48k
3.99k (x0.89)
Test#1 (Memory)
7.12k
3.66k (x0.51)
TOTAL
41.44k
28.23k (x0.68)

Multithread

i7-6820HQ

E5-2680 v2
Test#1 (Integers)
49.46k
215.04k (x4.35)
Test#2 (FP)
84.8k
230.43k (x2.72)
Test#3 (Generic, ZIP)
20.7k
96.87k (x4.68)
Test#1 (Memory)
4.77k
8.76k (x1.84)
TOTAL
159.73k
551.1k (x3.45)

Performance/W
i7-6820HQ
E5-2680 v2
Test#1 (Integers)
1099 points/W
1870 points/W
Test#2 (FP)
1884 points/W
2004 points/W
Test#3 (Generic, ZIP)
460 points/W
842 points/W
Test#1 (Memory)
106 points/W
76 points/W
TOTAL
3550 points/W
4792 points/W

Performance/GHz
i7-6820HQ
E5-2680 v2
Test#1 (Integers)
3273 points/GHz
2931 points/GHz
Test#2 (FP)
5016 points/GHz
2784 points/GHz
Test#3 (Generic, ZIP)
1244 points/GHz
1109 points/GHz
Test#1 (Memory)
1977 points/GHz
1017 points/GHz
TOTAL
11510 points/GHz
7841 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