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Xeon E5-2651 v2 vs FX 8120


Description
The E5-2651 v2 is based on Ivy Bridge architecture while the 8120 is based on Bulldozer.

Using the multithread performance as a reference, the E5-2651 v2 gets a score of 426.2 k points while the 8120 gets 70.8 k points.

Summarizing, the E5-2651 v2 is 6 times faster than the 8120. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
306e4
600f12
Core
Ivy Bridge-EP
Zambezi
Architecture
Base frecuency
1.8 GHz
3.1 GHz
Boost frecuency
2.2 GHz
4 GHz
Socket
LGA 2011
Socket AM3+
Cores/Threads
12/24
8/8
TDP
W
125 W
Cache L1 (d+i)
12x32+12x32 kB
4x64+8x16 kB
Cache L2
12x256 kB
4x2048 kB
Cache L3
30720 kB
8192 kB
Date
October 2013
October 2011
Mean monothread perf.
17.75k points
23.5k points
Mean multithread perf.
426.18k points
70.78k 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
8120
Test#1 (Integers)
6.69k
9.31k (x1.39)
Test#2 (FP)
6.35k
6.85k (x1.08)
Test#3 (Generic, ZIP)
2.54k
2.77k (x1.09)
Test#1 (Memory)
2.17k
4.58k (x2.11)
TOTAL
17.75k
23.5k (x1.32)

Multithread

E5-2651 v2

8120
Test#1 (Integers)
165.17k
25.84k (x0.16)
Test#2 (FP)
176.85k
28.49k (x0.16)
Test#3 (Generic, ZIP)
73.91k
13.84k (x0.19)
Test#1 (Memory)
10.25k
2.61k (x0.25)
TOTAL
426.18k
70.78k (x0.17)

Performance/W
E5-2651 v2
8120
Test#1 (Integers)