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Core i7-6600U vs Xeon E5-2680 v2


Description
The i7-6600U is based on Skylake architecture while the E5-2680 v2 is based on Ivy Bridge.

Using the multithread performance as a reference, the i7-6600U gets a score of 45.1 k points while the E5-2680 v2 gets 551.1 k points.

Summarizing, the E5-2680 v2 is 12.2 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
306e4
Core
Skylake-U
Ivy Bridge-EP
Architecture
Base frecuency
2.6 GHz
2.8 GHz
Boost frecuency
3.4 GHz
3.6 GHz
Socket
BGA1356
LGA 2011
Cores/Threads
2/4
10 /20
TDP
15 W
115 W
Cache L1 (d+i)
2x32+2x32 kB
10x32+10x32 kB
Cache L2
2x256 kB
10x256 kB
Cache L3
4096 kB
25600 kB
Date
September 2015
September 2013
Mean monothread perf.
39.73k points
28.23k points
Mean multithread perf.
79.22k points
551.1k points

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
E5-2680 v2
Test#1 (Integers)
6.76k
11.96k (x1.77)
Test#2 (FP)
9.58k
10.73k (x1.12)
Test#3 (Generic, ZIP)
2.46k
4.59k (x1.86)
Test#1 (Memory)
4.18k
4.31k (x1.03)
TOTAL
22.99k
31.6k (x1.37)

Multithread

i7-6600U

E5-2680 v2
Test#1 (Integers)
14.37k
218.24k (x15.19)
Test#2 (FP)
23.79k
206.92k (x8.7)
Test#3 (Generic, ZIP)
5.71k
100.37k (x17.59)
Test#1 (Memory)
4.29k
11.45k (x2.67)
TOTAL
48.16k
536.99k (x11.15)

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
E5-2680 v2
Test#1 (Integers)
8.49k
10.55k (x1.24)
Test#2 (FP)
10.92k
10.02k (x0.92)
Test#3 (Generic, ZIP)
2.76k
3.99k (x1.45)
Test#1 (Memory)
4.93k
3.66k (x0.74)
TOTAL
27.1k
28.23k (x1.04)

Multithread

i7-6600U

E5-2680 v2
Test#1 (Integers)
14.11k
215.04k (x15.24)
Test#2 (FP)
20.05k
230.43k (x11.49)
Test#3 (Generic, ZIP)
6.17k
96.87k (x15.71)
Test#1 (Memory)
4.73k
8.76k (x1.85)
TOTAL
45.05k
551.1k (x12.23)

Performance/W
i7-6600U
E5-2680 v2
Test#1 (Integers)
940 points/W
1870 points/W
Test#2 (FP)
1337 points/W
2004 points/W
Test#3 (Generic, ZIP)
411 points/W
842 points/W
Test#1 (Memory)
315 points/W
76 points/W
TOTAL
3004 points/W
4792 points/W

Performance/GHz
i7-6600U
E5-2680 v2
Test#1 (Integers)
2497 points/GHz
2931 points/GHz
Test#2 (FP)
3211 points/GHz
2784 points/GHz
Test#3 (Generic, ZIP)
813 points/GHz
1109 points/GHz
Test#1 (Memory)
1449 points/GHz
1017 points/GHz
TOTAL
7970 points/GHz
7841 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