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Xeon E5-2651 v2 vs Virtual CPU Version 2.5


Description
The E5-2651 v2 is based on Ivy Bridge architecture while the Version 2.5 is based on -.

Using the multithread performance as a reference, the E5-2651 v2 gets a score of 415 k points while the Version 2.5 gets 85.7 k points.

Summarizing, the E5-2651 v2 is 4.8 times faster than the Version 2.5. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306e4
663
Core
Ivy Bridge-EP
-
Architecture
Ivy Bridge
Base frecuency
1.8 GHz
4.2 GHz
Boost frecuency
2.2 GHz
4.2 GHz
Socket
LGA 2011
-
Cores/Threads
12/24
2/2
TDP
W
- W
Cache L1 (d+i)
12x32+12x32 kB
- kB
Cache L2
12x256 kB
- kB
Cache L3
30720 kB
- kB
Date
October 2013
-
Mean monothread perf.
17.75k points
56.16k points
Mean multithread perf.
426.18k points
85.75k 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
E5-2651 v2
Version 2.5
Test#1 (Integers)
6.75k
15.7k (x2.32)
Test#2 (FP)
6.05k
22.8k (x3.77)
Test#3 (Generic, ZIP)
2.61k
5.61k (x2.15)
Test#1 (Memory)
2.26k
12.05k (x5.33)
TOTAL
17.68k
56.16k (x3.18)

Multithread

E5-2651 v2

Version 2.5
Test#1 (Integers)
168.18k
28.49k (x0.17)
Test#2 (FP)
159.6k
37.67k (x0.24)
Test#3 (Generic, ZIP)
77.04k
10.09k (x0.13)
Test#1 (Memory)
10.19k
9.5k (x0.93)
TOTAL
415.01k
85.75k (x0.21)

Performance/W
E5-2651 v2
Version 2.5
Test#1 (Integers)