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Core i5-520M vs Pentium D 925


Description
The i5-520M is based on Westmere architecture while the 925 is based on NetBurst.

Using the multithread performance as a reference, the i5-520M gets a score of 26.3 k points while the 925 gets 14 k points.

Summarizing, the i5-520M is 1.9 times faster than the 925. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
f65
Core
Arrandale
Presler
Architecture
Base frecuency
2.4 GHz
3 GHz
Boost frecuency
2.933 GHz
3 GHz
Socket
FC-PGA 988
LGA 775
Cores/Threads
2/4
2/2
TDP
35 W
95 W
Cache L1 (d+i)
2x32+2x32 kB
16+8 kB
Cache L2
2x256 kB
4096 kB
Cache L3
3072 kB
0 kB
Date
January 2010
October 2006
Mean monothread perf.
13.1k points
7.7k points
Mean multithread perf.
26.27k points
14.03k 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
i5-520M
925
Test#1 (Integers)
5.41k
2.06k (x0.38)
Test#2 (FP)
3.69k
3.32k (x0.9)
Test#3 (Generic, ZIP)
2.12k
1.52k (x0.72)
Test#1 (Memory)
1.88k
0.8k (x0.43)
TOTAL
13.1k
7.7k (x0.59)

Multithread

i5-520M

925
Test#1 (Integers)
10.7k
4k (x0.37)
Test#2 (FP)
7.91k
6.32k (x0.8)
Test#3 (Generic, ZIP)
5.08k
2.91k (x0.57)
Test#1 (Memory)
2.58k
0.81k (x0.31)
TOTAL
26.27k
14.03k (x0.53)

Performance/W
i5-520M
925
Test#1 (Integers)
306 points/W
42 points/W
Test#2 (FP)
226 points/W
67 points/W
Test#3 (Generic, ZIP)
145 points/W
31 points/W
Test#1 (Memory)
74 points/W
9 points/W
TOTAL
751 points/W
148 points/W

Performance/GHz
i5-520M
925
Test#1 (Integers)
1844 points/GHz
686 points/GHz
Test#2 (FP)
1259 points/GHz
1105 points/GHz
Test#3 (Generic, ZIP)
723 points/GHz
507 points/GHz
Test#1 (Memory)
641 points/GHz
266 points/GHz
TOTAL
4466 points/GHz
2565 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