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Core i7-6820HQ vs Xeon E5-2620 v4


Description
The i7-6820HQ is based on Skylake architecture while the E5-2620 v4 is based on Broadwell.

Using the multithread performance as a reference, the i7-6820HQ gets a score of 206.3 k points while the E5-2620 v4 gets 237.8 k points.

Summarizing, the E5-2620 v4 is 1.2 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
406f1
Core
Skylake-H
Broadwell-EP
Architecture
Base frecuency
2.7 GHz
2.1 GHz
Boost frecuency
3.6 GHz
3 GHz
Socket
BGA1440
Socket 2011-3
Cores/Threads
4/8
8/16
TDP
45 W
85 W
Cache L1 (d+i)
4x32+4x32 kB
8x32+8x32 kB
Cache L2
4x256 kB
8x256 kB
Cache L3
8192 kB
20480 kB
Date
October 2015
March 2016

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
E5-2620 v4
Test#1 (Integers)
3180
2604 (-18.11%)
Test#2 (FP)
13020
7552 (-42.00%)
Test#3 (Generic, ZIP)
4169
2612 (-37.36%)
Test#1 (Memory)
6931
2028 (-70.75%)
TOTAL
27299
14794 (-45.81%)

Multithread

i7-6820HQ

E5-2620 v4
Test#1 (Integers)
13259
17415 (31.34%)
Test#2 (FP)
62228
75463 (21.27%)
Test#3 (Generic, ZIP)
20342
26246 (29.02%)
Test#1 (Memory)
5464
4652 (-14.86%)
TOTAL
101292
123775 (22.20%)

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
E5-2620 v4
Test#1 (Integers)
11536
8218 (-28.77%)
Test#2 (FP)
16687
12063 (-27.71%)
Test#3 (Generic, ZIP)
4514
4006 (-11.26%)
Test#1 (Memory)
7273
2890 (-60.27%)
TOTAL
40011
27176 (-32.08%)

Multithread

i7-6820HQ

E5-2620 v4
Test#1 (Integers)
48501
61342 (26.48%)
Test#2 (FP)
77016
90207 (17.13%)
Test#3 (Generic, ZIP)
21301
26195 (22.98%)
Test#1 (Memory)
5242
4625 (-11.77%)
TOTAL
152060
182369 (19.93%)

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
E5-2620 v4
Test#1 (Integers)
11784
6040 (-48.75%)
Test#2 (FP)
18056
10180 (-43.62%)
Test#3 (Generic, ZIP)
4479
2745 (-38.72%)
Test#1 (Memory)
7117
2406 (-66.20%)
TOTAL
41437
21370 (-48.43%)

Multithread

i7-6820HQ

E5-2620 v4
Test#1 (Integers)
49458
47514 (-3.93%)
Test#2 (FP)
84798
75116 (-11.42%)
Test#3 (Generic, ZIP)
20703
19719 (-4.75%)
Test#1 (Memory)
4770
5455 (14.35%)
TOTAL
159730
147804 (-7.47%)

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
E5-2620 v4
Test#1 (Integers)
21147
12163 (-42.48%)
Test#2 (FP)
18663
11818 (-36.67%)
Test#3 (Generic, ZIP)
4359
3016 (-30.81%)
Test#1 (Memory)
6240
2397 (-61.59%)
TOTAL
50409
29395 (-41.69%)

Multithread

i7-6820HQ

E5-2620 v4
Test#1 (Integers)
91901
103774 (12.92%)
Test#2 (FP)
87330
102275 (17.11%)
Test#3 (Generic, ZIP)
20715
26135 (26.17%)
Test#1 (Memory)
6325
5646 (-10.74%)
TOTAL
206271
237831 (15.30%)

Performance/W
i7-6820HQ
E5-2620 v4
Test#1 (Integers)
2042 points/W
1221 points/W
Test#2 (FP)
1941 points/W
1203 points/W
Test#3 (Generic, ZIP)
460 points/W
307 points/W
Test#1 (Memory)
141 points/W
66 points/W
TOTAL
4584 points/W
2798 points/W

Performance/GHz
i7-6820HQ
E5-2620 v4
Test#1 (Integers)
5874 points/GHz
4054 points/GHz
Test#2 (FP)
5184 points/GHz
3939 points/GHz
Test#3 (Generic, ZIP)
1211 points/GHz
1005 points/GHz
Test#1 (Memory)
1733 points/GHz
799 points/GHz
TOTAL
14002 points/GHz
9798 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