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Xeon E5-4640 vs Core i5-520M


Description
The E5-4640 is based on Sandy Bridge architecture while the i5-520M is based on Westmere.

Using the multithread performance as a reference, the E5-4640 gets a score of 581.6 k points while the i5-520M gets 33.1 k points.

Summarizing, the E5-4640 is 17.6 times faster than the i5-520M. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
206d7
20652
Core
Sandy Bridge-EP
Arrandale
Architecture
Base frecuency
2.4 GHz
2.4 GHz
Boost frecuency
2.8 GHz
2.933 GHz
Socket
LGA 2011
FC-PGA 988
Cores/Threads
8 /16
2/4
TDP
95 W
35 W
Cache L1 (d+i)
8x32+8x32 kB
2x32+2x32 kB
Cache L2
8x256 kB
2x256 kB
Cache L3
20480 kB
3072 kB
Date
May 2012
January 2010
Mean monothread perf.
13.88k points
15.93k points
Mean multithread perf.
610.16k points
33.14k 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
i5-520M
Test#1 (Integers)
6.19k
6.67k (x1.08)
Test#2 (FP)
5.89k
4.59k (x0.78)
Test#3 (Generic, ZIP)
2.11k
2.49k (x1.18)
Test#1 (Memory)
2.51k
2.18k (x0.87)
TOTAL
16.7k
15.93k (x0.95)

Multithread

E5-4640

i5-520M
Test#1 (Integers)
244.88k
13.75k (x0.06)
Test#2 (FP)
215.35k
10.03k (x0.05)
Test#3 (Generic, ZIP)
114.64k
6.67k (x0.06)
Test#1 (Memory)
6.76k
2.68k (x0.4)
TOTAL
581.63k
33.14k (x0.06)

Performance/W
E5-4640
i5-520M
Test#1 (Integers)
2578 points/W
393 points/W
Test#2 (FP)
2267 points/W
287 points/W
Test#3 (Generic, ZIP)
1207 points/W
191 points/W
Test#1 (Memory)
71 points/W
77 points/W
TOTAL
6122 points/W
947 points/W

Performance/GHz
E5-4640
i5-520M
Test#1 (Integers)
2210 points/GHz
2275 points/GHz
Test#2 (FP)
2105 points/GHz
1567 points/GHz
Test#3 (Generic, ZIP)
755 points/GHz
849 points/GHz
Test#1 (Memory)
895 points/GHz
742 points/GHz
TOTAL
5966 points/GHz
5433 points/GHz

Monothread performance graph
Monothread performance graphics gives the performance vs time. They are useful to measure the time it takes to the CPU to reach the maximum performance.

Usually, CPU's performance will be steady during these tests but if it has a slow frequency strategy, the first samples will show a lower score.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Multithread performance graph
Multithread graphs measure the performance against a heavy load during certain time.

If CPU's TDP doesn't limit the frequency and the machine is properly cooled, performance should remain steady vs time. Otherwise, the performance score will oscillate or decrease over time.


Test#1 (Integers) [points vs time]

grafica bm.hardlimit.com


Test#2 (FP) [points vs time]

grafica bm.hardlimit.com


Test#3 (Generic, ZIP) [points vs time]

grafica bm.hardlimit.com


Test#1 (Memory) [points vs time]

grafica bm.hardlimit.com

Hardlimit Benchmark Central - Ver. 3.11.4