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Core i7-7660U vs Xeon E3-1220 v3


Description
The i7-7660U is based on Kaby Lake architecture while the E3-1220 v3 is based on Haswell.

Using the multithread performance as a reference, the i7-7660U gets a score of 132.8 k points while the E3-1220 v3 gets 140.8 k points.

Summarizing, the E3-1220 v3 is 1.1 times faster than the i7-7660U. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
806e9
306c3
Core
Kaby Lake-U
Haswell-WS
Architecture
Base frecuency
2.5 GHz
3.1 GHz
Boost frecuency
4 GHz
3.5 GHz
Socket
BGA 1356
LGA 1150
Cores/Threads
2/4
4 /4
TDP
15 W
80 W
Cache L1 (d+i)
2x32+2x32 kB
64 kB
Cache L2
2x256 kB
256 kB
Cache L3
4096 kB
8192 kB
Date
January 2017
June 2013
Mean monothread perf.
57.46k points
39.16k points
Mean multithread perf.
132.81k points
140.76k points

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
i7-7660U
E3-1220 v3
Test#1 (Integers)
22.46k
19.17k (x0.85)
Test#2 (FP)
19.29k
10.55k (x0.55)
Test#3 (Generic, ZIP)
4.77k
4.79k (x1)
Test#1 (Memory)
10.94k
4.65k (x0.43)
TOTAL
57.46k
39.16k (x0.68)

Multithread

i7-7660U

E3-1220 v3
Test#1 (Integers)
56.67k
73.13k (x1.29)
Test#2 (FP)
46.95k
42.06k (x0.9)
Test#3 (Generic, ZIP)
12.36k
18.03k (x1.46)
Test#1 (Memory)
16.84k
7.54k (x0.45)
TOTAL
132.81k
140.76k (x1.06)

Performance/W
i7-7660U
E3-1220 v3
Test#1 (Integers)
3778 points/W
914 points/W
Test#2 (FP)
3130 points/W
526 points/W
Test#3 (Generic, ZIP)
824 points/W
225 points/W
Test#1 (Memory)
1122 points/W
94 points/W
TOTAL
8854 points/W
1759 points/W

Performance/GHz
i7-7660U
E3-1220 v3
Test#1 (Integers)
5614 points/GHz
5478 points/GHz
Test#2 (FP)
4823 points/GHz
3014 points/GHz
Test#3 (Generic, ZIP)
1193 points/GHz
1368 points/GHz
Test#1 (Memory)
2735 points/GHz
1328 points/GHz
TOTAL
14365 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. 3.11.4