| | | | | | |

Core i7-6600U vs Xeon E5-2620 v4


Description
The i7-6600U is based on Skylake architecture while the E5-2620 v4 is based on Broadwell.

Using the multithread performance as a reference, the i7-6600U gets a score of 79.2 k points while the E5-2620 v4 gets 237.8 k points.

Summarizing, the E5-2620 v4 is 3 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
406e3
406f1
Core
Skylake-U
Broadwell-EP
Architecture
Base frecuency
2.6 GHz
2.1 GHz
Boost frecuency
3.4 GHz
3 GHz
Socket
BGA1356
Socket 2011-3
Cores/Threads
2/4
8/16
TDP
15 W
85 W
Cache L1 (d+i)
2x32+2x32 kB
8x32+8x32 kB
Cache L2
2x256 kB
8x256 kB
Cache L3
4096 kB
20480 kB
Date
September 2015
March 2016
Mean monothread perf.
39.73k points
29.39k points
Mean multithread perf.
79.22k points
237.83k points

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
i7-6600U
E5-2620 v4
Test#1 (Integers)
2.75k
2.6k (x0.95)
Test#2 (FP)
12.23k
7.55k (x0.62)
Test#3 (Generic, ZIP)
3.9k
2.61k (x0.67)
Test#1 (Memory)
5.61k
2.03k (x0.36)
TOTAL
24.48k
14.79k (x0.6)

Multithread

i7-6600U

E5-2620 v4
Test#1 (Integers)
5.23k
17.41k (x3.33)
Test#2 (FP)
25k
75.46k (x3.02)
Test#3 (Generic, ZIP)
8.98k
26.25k (x2.92)
Test#1 (Memory)
4.73k
4.65k (x0.98)
TOTAL
43.95k
123.78k (x2.82)

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
i7-6600U
E5-2620 v4
Test#1 (Integers)
6.76k
8.22k (x1.22)
Test#2 (FP)
9.58k
12.06k (x1.26)
Test#3 (Generic, ZIP)
2.46k
4.01k (x1.63)
Test#1 (Memory)
4.18k
2.89k (x0.69)
TOTAL
22.99k
27.18k (x1.18)

Multithread

i7-6600U

E5-2620 v4
Test#1 (Integers)
14.37k
61.34k (x4.27)
Test#2 (FP)
23.79k
90.21k (x3.79)
Test#3 (Generic, ZIP)
5.71k
26.2k (x4.59)
Test#1 (Memory)
4.29k
4.62k (x1.08)
TOTAL
48.16k
182.37k (x3.79)

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
i7-6600U
E5-2620 v4
Test#1 (Integers)
8.49k
6.04k (x0.71)
Test#2 (FP)
10.92k
10.18k (x0.93)
Test#3 (Generic, ZIP)
2.76k
2.74k (x0.99)
Test#1 (Memory)
4.93k
2.41k (x0.49)
TOTAL
27.1k
21.37k (x0.79)

Multithread

i7-6600U

E5-2620 v4
Test#1 (Integers)
14.11k
47.51k (x3.37)
Test#2 (FP)
20.05k
75.12k (x3.75)
Test#3 (Generic, ZIP)
6.17k
19.72k (x3.2)
Test#1 (Memory)
4.73k
5.45k (x1.15)
TOTAL
45.05k
147.8k (x3.28)

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
i7-6600U
E5-2620 v4
Test#1 (Integers)
16.72k
12.16k (x0.73)
Test#2 (FP)
14.7k
11.82k (x0.8)
Test#3 (Generic, ZIP)
3.4k
3.02k (x0.89)
Test#1 (Memory)
4.9k
2.4k (x0.49)
TOTAL
39.73k
29.39k (x0.74)

Multithread

i7-6600U

E5-2620 v4
Test#1 (Integers)
33.41k
103.77k (x3.11)
Test#2 (FP)
31.66k
102.28k (x3.23)
Test#3 (Generic, ZIP)
8.18k
26.13k (x3.19)
Test#1 (Memory)
5.97k
5.65k (x0.95)
TOTAL
79.22k
237.83k (x3)

Performance/W
i7-6600U
E5-2620 v4
Test#1 (Integers)
2227 points/W
1221 points/W
Test#2 (FP)
2111 points/W
1203 points/W
Test#3 (Generic, ZIP)
546 points/W
307 points/W
Test#1 (Memory)
398 points/W
66 points/W
TOTAL
5282 points/W
2798 points/W

Performance/GHz
i7-6600U
E5-2620 v4
Test#1 (Integers)
4919 points/GHz
4054 points/GHz
Test#2 (FP)
4325 points/GHz
3939 points/GHz
Test#3 (Generic, ZIP)
999 points/GHz
1005 points/GHz
Test#1 (Memory)
1441 points/GHz
799 points/GHz
TOTAL
11684 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. 3.11.4