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Xeon E5-2680 v2 vs E5-2651 v2


Description
Both models E5-2680 v2 and E5-2651 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 E5-2680 v2 gets a score of 551.1 k points while the E5-2651 v2 gets 426.2 k points.

Summarizing, the E5-2680 v2 is 1.3 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
2.8 GHz
1.8 GHz
Boost frecuency
3.6 GHz
2.2 GHz
Socket
LGA 2011
LGA 2011
Cores/Threads
10 /20
12/24
TDP
115 W
W
Cache L1 (d+i)
10x32+10x32 kB
12x32+12x32 kB
Cache L2
10x256 kB
12x256 kB
Cache L3
25600 kB
30720 kB
Date
September 2013
October 2013
Mean monothread perf.
28.23k points
17.75k points
Mean multithread perf.
551.1k points
426.18k 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
E5-2680 v2
E5-2651 v2
Test#1 (Integers)
11.96k
6.75k (x0.56)
Test#2 (FP)
10.73k
6.05k (x0.56)
Test#3 (Generic, ZIP)
4.59k
2.61k (x0.57)
Test#1 (Memory)
4.31k
2.26k (x0.53)
TOTAL
31.6k
17.68k (x0.56)

Multithread

E5-2680 v2

E5-2651 v2
Test#1 (Integers)
218.24k
168.18k (x0.77)
Test#2 (FP)
206.92k
159.6k (x0.77)
Test#3 (Generic, ZIP)
100.37k
77.04k (x0.77)
Test#1 (Memory)
11.45k
10.19k (x0.89)
TOTAL
536.99k
415.01k (x0.77)

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
E5-2680 v2
E5-2651 v2
Test#1 (Integers)
10.55k
6.69k (x0.63)
Test#2 (FP)
10.02k
6.35k (x0.63)
Test#3 (Generic, ZIP)
3.99k
2.54k (x0.64)
Test#1 (Memory)
3.66k
2.17k (x0.59)
TOTAL
28.23k
17.75k (x0.63)

Multithread

E5-2680 v2

E5-2651 v2
Test#1 (Integers)
215.04k
165.17k (x0.77)
Test#2 (FP)
230.43k
176.85k (x0.77)
Test#3 (Generic, ZIP)
96.87k
73.91k (x0.76)
Test#1 (Memory)
8.76k
10.25k (x1.17)
TOTAL
551.1k
426.18k (x0.77)

Performance/W
E5-2680 v2
E5-2651 v2
Test#1 (Integers)
1870 points/W