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Virtual CPU 2,84GHz vs Xeon E5645


Description
The 2,84GHz is based on - architecture while the E5645 is based on Westmere.

Using the multithread performance as a reference, the 2,84GHz gets a score of 79.8 k points while the E5645 gets 77 k points.

Summarizing, the 2,84GHz is 1 times faster than the E5645 . To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
f4a
206c2
Core
-
Westmere-EP
Architecture
-
Base frecuency
2.84 GHz
2.4 GHz
Boost frecuency
2.84 GHz
2.8 GHz
Socket
-
LGA 1366
Cores/Threads
8/8
6 /6
TDP
- W
80 W
Cache L1 (d+i)
- kB
64 kB
Cache L2
- kB
256 kB
Cache L3
- kB
12288 kB
Date
-
March 2010
Mean monothread perf.
21.22k points
15.64k points
Mean multithread perf.
79.76k points
76.96k 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
2,84GHz
E5645
Test#1 (Integers)
4.27k
6.47k (x1.52)
Test#2 (FP)
8.93k
4.4k (x0.49)
Test#3 (Generic, ZIP)
2.79k
2.43k (x0.87)
Test#1 (Memory)
5.23k
2.33k (x0.45)
TOTAL
21.22k
15.64k (x0.74)

Multithread

2,84GHz

E5645
Test#1 (Integers)
19.35k
34.43k (x1.78)
Test#2 (FP)
40.57k
24.23k (x0.6)
Test#3 (Generic, ZIP)
13.15k
14.48k (x1.1)
Test#1 (Memory)
6.7k
3.81k (x0.57)
TOTAL
79.76k
76.96k (x0.96)

Performance/W
2,84GHz
E5645
Test#1 (Integers)