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Xeon W3520 vs Core i7-640LM


Description
The W3520 is based on Nehalem architecture while the i7-640LM is based on Westmere.

Using the multithread performance as a reference, the W3520 gets a score of 73.2 k points while the i7-640LM gets 31.7 k points.

Summarizing, the W3520 is 2.3 times faster than the i7-640LM. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
106a5
20655
Core
Nehalem-WS
Calpella
Architecture
Base frecuency
2.667 GHz
2.133 GHz
Boost frecuency
2.933 GHz
2.667 GHz
Socket
LGA 1366
BGA1288
Cores/Threads
4 /8
2/4
TDP
130 W
25 W
Cache L1 (d+i)
4x32+x4x32 kB
2x32+2x32 kB
Cache L2
4x256 kB
2x256 kB
Cache L3
8192 kB
4096 kB
Date
March 2009
January 2010
Mean monothread perf.
17.96k points
16.35k points
Mean multithread perf.
73.16k points
31.74k 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
W3520
i7-640LM
Test#1 (Integers)
7.35k
7.01k (x0.95)
Test#2 (FP)
4.89k
4.58k (x0.94)
Test#3 (Generic, ZIP)
2.9k
2.73k (x0.94)
Test#1 (Memory)
2.82k
2.03k (x0.72)
TOTAL
17.96k
16.35k (x0.91)

Multithread

W3520

i7-640LM
Test#1 (Integers)
29.69k
12.93k (x0.44)
Test#2 (FP)
22.26k
10.21k (x0.46)
Test#3 (Generic, ZIP)
14.91k
6.22k (x0.42)
Test#1 (Memory)
6.29k
2.37k (x0.38)
TOTAL
73.16k
31.74k (x0.43)

Performance/W
W3520
i7-640LM
Test#1 (Integers)
228 points/W
517 points/W
Test#2 (FP)
171 points/W
409 points/W
Test#3 (Generic, ZIP)
115 points/W
249 points/W
Test#1 (Memory)
48 points/W
95 points/W
TOTAL
563 points/W
1269 points/W

Performance/GHz
W3520
i7-640LM
Test#1 (Integers)
2506 points/GHz
2627 points/GHz
Test#2 (FP)
1669 points/GHz
1718 points/GHz
Test#3 (Generic, ZIP)
989 points/GHz
1024 points/GHz
Test#1 (Memory)
960 points/GHz
762 points/GHz
TOTAL
6123 points/GHz
6130 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