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Xeon E3-1220 v3 vs Core i7-6600U


Description
The E3-1220 v3 is based on Haswell architecture while the i7-6600U is based on Skylake.

Using the multithread performance as a reference, the E3-1220 v3 gets a score of 140.8 k points while the i7-6600U gets 79.2 k points.

Summarizing, the E3-1220 v3 is 1.8 times faster than the i7-6600U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306c3
406e3
Core
Haswell-WS
Skylake-U
Architecture
Base frecuency
3.1 GHz
2.6 GHz
Boost frecuency
3.5 GHz
3.4 GHz
Socket
LGA 1150
BGA1356
Cores/Threads
4 /4
2/4
TDP
80 W
15 W
Cache L1 (d+i)
64 kB
2x32+2x32 kB
Cache L2
256 kB
2x256 kB
Cache L3
8192 kB
4096 kB
Date
June 2013
September 2015
Mean monothread perf.
39.16k points
39.73k points
Mean multithread perf.
140.76k points
79.22k 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
E3-1220 v3
i7-6600U
Test#1 (Integers)
3.45k
2.75k (x0.8)
Test#2 (FP)
9.96k
12.23k (x1.23)
Test#3 (Generic, ZIP)
4.26k
3.9k (x0.92)
Test#1 (Memory)
4.27k
5.61k (x1.31)
TOTAL
21.94k
24.48k (x1.12)

Multithread

E3-1220 v3

i7-6600U
Test#1 (Integers)
14.01k
5.23k (x0.37)
Test#2 (FP)
37.68k
25k (x0.66)
Test#3 (Generic, ZIP)
17.05k
8.98k (x0.53)
Test#1 (Memory)
7.35k
4.73k (x0.64)
TOTAL
76.09k
43.95k (x0.58)

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
E3-1220 v3
i7-6600U
Test#1 (Integers)
19.17k
16.72k (x0.87)
Test#2 (FP)
10.55k
14.7k (x1.39)
Test#3 (Generic, ZIP)
4.79k
3.4k (x0.71)
Test#1 (Memory)
4.65k
4.9k (x1.05)
TOTAL
39.16k
39.73k (x1.01)

Multithread

E3-1220 v3

i7-6600U
Test#1 (Integers)
73.13k
33.41k (x0.46)
Test#2 (FP)
42.06k
31.66k (x0.75)
Test#3 (Generic, ZIP)
18.03k
8.18k (x0.45)
Test#1 (Memory)
7.54k
5.97k (x0.79)
TOTAL
140.76k
79.22k (x0.56)

Performance/W
E3-1220 v3
i7-6600U
Test#1 (Integers)
914 points/W
2227 points/W
Test#2 (FP)
526 points/W
2111 points/W
Test#3 (Generic, ZIP)
225 points/W
546 points/W
Test#1 (Memory)
94 points/W
398 points/W
TOTAL
1759 points/W
5282 points/W

Performance/GHz
E3-1220 v3
i7-6600U
Test#1 (Integers)
5478 points/GHz
4919 points/GHz
Test#2 (FP)
3014 points/GHz
4325 points/GHz
Test#3 (Generic, ZIP)
1368 points/GHz
999 points/GHz
Test#1 (Memory)
1328 points/GHz
1441 points/GHz
TOTAL
11188 points/GHz
11684 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