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Xeon E5-4640 vs Virtual CPU 2,84GHz


Description
The E5-4640 is based on Sandy Bridge architecture while the 2,84GHz is based on -.

Using the multithread performance as a reference, the E5-4640 gets a score of 581.6 k points while the 2,84GHz gets 79.8 k points.

Summarizing, the E5-4640 is 7.3 times faster than the 2,84GHz. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206d7
f4a
Core
Sandy Bridge-EP
-
Architecture
Sandy Bridge
Base frecuency
2.4 GHz
2.84 GHz
Boost frecuency
2.8 GHz
2.84 GHz
Socket
LGA 2011
-
Cores/Threads
8 /16
8/8
TDP
95 W
- W
Cache L1 (d+i)
8x32+8x32 kB
- kB
Cache L2
8x256 kB
- kB
Cache L3
20480 kB
- kB
Date
May 2012
-
Mean monothread perf.
13.88k points
21.22k points
Mean multithread perf.
610.16k points
79.76k 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
E5-4640
2,84GHz
Test#1 (Integers)
6.19k
4.27k (x0.69)
Test#2 (FP)
5.89k
8.93k (x1.51)
Test#3 (Generic, ZIP)
2.11k
2.79k (x1.32)
Test#1 (Memory)
2.51k
5.23k (x2.09)
TOTAL
16.7k
21.22k (x1.27)

Multithread

E5-4640

2,84GHz
Test#1 (Integers)
244.88k
19.35k (x0.08)
Test#2 (FP)
215.35k
40.57k (x0.19)
Test#3 (Generic, ZIP)
114.64k
13.15k (x0.11)
Test#1 (Memory)
6.76k
6.7k (x0.99)
TOTAL
581.63k
79.76k (x0.14)

Performance/W
E5-4640
2,84GHz
Test#1 (Integers)
2578 points/W