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Core i7-6820HQ vs Xeon E3-1220 v3


Description
The i7-6820HQ is based on Skylake architecture while the E3-1220 v3 is based on Haswell.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the E3-1220 v3 gets 140.8 k points.

Summarizing, the i7-6820HQ is 1.5 times faster than the E3-1220 v3 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
506e3
306c3
Core
Skylake-H
Haswell-WS
Architecture
Base frecuency
2.7 GHz
3.1 GHz
Boost frecuency
3.6 GHz
3.5 GHz
Socket
BGA1440
LGA 1150
Cores/Threads
4/8
4 /4
TDP
45 W
80 W
Cache L1 (d+i)
4x32+4x32 kB
64 kB
Cache L2
4x256 kB
256 kB
Cache L3
8192 kB
8192 kB
Date
October 2015
Jun 2013

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
i7-6820HQ
E3-1220 v3
Test#1 (Integers)
3180
3447 (8.41%)
Test#2 (FP)
13020
9958 (-23.51%)
Test#3 (Generic, ZIP)
4169
4260 (2.18%)
Test#1 (Memory)
6931
4271 (-38.37%)
TOTAL
27299
21937 (-19.64%)

Multithread

i7-6820HQ

E3-1220 v3
Test#1 (Integers)
13259
14010 (5.66%)
Test#2 (FP)
62228
37683 (-39.44%)
Test#3 (Generic, ZIP)
20342
17052 (-16.18%)
Test#1 (Memory)
5464
7349 (34.52%)
TOTAL
101292
76094 (-24.88%)

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
i7-6820HQ
E3-1220 v3
Test#1 (Integers)
21147
19172 (-9.34%)
Test#2 (FP)
18663
10549 (-43.48%)
Test#3 (Generic, ZIP)
4359
4788 (9.84%)
Test#1 (Memory)
6240
4649 (-25.49%)
TOTAL
50409
39158 (-22.32%)

Multithread

i7-6820HQ

E3-1220 v3
Test#1 (Integers)
91901
73132 (-20.42%)
Test#2 (FP)
87330
42056 (-51.84%)
Test#3 (Generic, ZIP)
20715
18031 (-12.95%)
Test#1 (Memory)
6325
7538 (19.17%)
TOTAL
206271
140757 (-31.76%)

Performance/W
i7-6820HQ
E3-1220 v3
Test#1 (Integers)
2042 points/W
914 points/W
Test#2 (FP)
1941 points/W
526 points/W
Test#3 (Generic, ZIP)
460 points/W
225 points/W
Test#1 (Memory)
141 points/W
94 points/W
TOTAL
4584 points/W
1759 points/W

Performance/GHz
i7-6820HQ
E3-1220 v3
Test#1 (Integers)
5874 points/GHz
5478 points/GHz
Test#2 (FP)
5184 points/GHz
3014 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1368 points/GHz
Test#1 (Memory)
1733 points/GHz
1328 points/GHz
TOTAL
14002 points/GHz
11188 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. 3.7.8