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Xeon E5-2651 v2 vs E5-2660 v2


Description
Both models E5-2651 v2 and E5-2660 v2 are based on Ivy Bridge architecture.

"Ivy Bridge is the last Intel microarchitecture for which there is official driver support for Windows XP . It is made under 22 nm Tri-Gate transistor (""3D"") technology and is basically a Sandy Bridge shrink. It has PCI Express 3.0 support and RdRand instruction for security tasks."

Using the multithread performance as a reference, the E5-2651 v2 gets a score of 426.2 k points while the E5-2660 v2 gets 459.3 k points.

Summarizing, the E5-2660 v2 is 1.1 times faster than the E5-2651 v2. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306e4
306e4
Core
Ivy Bridge-EP
Ivy Bridge-EP
Architecture
Base frecuency
1.8 GHz
2.2 GHz
Boost frecuency
2.2 GHz
3 GHz
Socket
LGA 2011
LGA 2011
Cores/Threads
12/24
10 /20
TDP
W
95 W
Cache L1 (d+i)
12x32+12x32 kB
10x32+10x32 kB
Cache L2
12x256 kB
10x256 kB
Cache L3
30720 kB
25600 kB
Date
October 2013
September 2013
Mean monothread perf.
17.75k points
19.48k points
Mean multithread perf.
426.18k points
459.31k points

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
E5-2651 v2
E5-2660 v2
Test#1 (Integers)
6.69k
7.26k (x1.09)
Test#2 (FP)
6.35k
6.9k (x1.09)
Test#3 (Generic, ZIP)
2.54k
2.77k (x1.09)
Test#1 (Memory)
2.17k
2.55k (x1.18)
TOTAL
17.75k
19.48k (x1.1)

Multithread

E5-2651 v2

E5-2660 v2
Test#1 (Integers)
165.17k
180.2k (x1.09)
Test#2 (FP)
176.85k
191.43k (x1.08)
Test#3 (Generic, ZIP)
73.91k
80.22k (x1.09)
Test#1 (Memory)
10.25k
7.46k (x0.73)
TOTAL
426.18k
459.31k (x1.08)

Performance/W
E5-2651 v2
E5-2660 v2
Test#1 (Integers)