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Core 2 Duo P8400 vs Core i5-520M


Description
The P8400 is based on Core architecture while the i5-520M is based on Westmere.

Using the multithread performance as a reference, the P8400 gets a score of 21 k points while the i5-520M gets 26.3 k points.

Summarizing, the i5-520M is 1.3 times faster than the P8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
10676
20655
Core
Peryn-3M
Arrandale
Architecture
Base frecuency
2.267 GHz
2.4 GHz
Boost frecuency
2.267 GHz
2.933 GHz
Socket
Socket P
FC-PGA 988
Cores/Threads
2/2
2/4
TDP
25 W
35 W
Cache L1 (d+i)
2x32 kB
2x32+2x32 kB
Cache L2
3072 kB
2x256 kB
Cache L3
0 kB
3072 kB
Date
July 2008
January 2010
Mean monothread perf.
11.38k points
13.1k points
Mean multithread perf.
21.02k points
26.27k 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
P8400
i5-520M
Test#1 (Integers)
2.43k
5.41k (x2.23)
Test#2 (FP)
5.4k
3.69k (x0.68)
Test#3 (Generic, ZIP)
2.13k
2.12k (x1)
Test#1 (Memory)
1.43k
1.88k (x1.32)
TOTAL
11.38k
13.1k (x1.15)

Multithread

P8400

i5-520M
Test#1 (Integers)
4.81k
10.7k (x2.22)
Test#2 (FP)
10.58k
7.91k (x0.75)
Test#3 (Generic, ZIP)
4.18k
5.08k (x1.22)
Test#1 (Memory)
1.45k
2.58k (x1.78)
TOTAL
21.02k
26.27k (x1.25)

Performance/W
P8400
i5-520M
Test#1 (Integers)
193 points/W
306 points/W
Test#2 (FP)
423 points/W
226 points/W
Test#3 (Generic, ZIP)
167 points/W
145 points/W
Test#1 (Memory)
58 points/W
74 points/W
TOTAL
841 points/W
751 points/W

Performance/GHz
P8400
i5-520M
Test#1 (Integers)
1071 points/GHz
1844 points/GHz
Test#2 (FP)
2383 points/GHz
1259 points/GHz
Test#3 (Generic, ZIP)
938 points/GHz
723 points/GHz
Test#1 (Memory)
629 points/GHz
641 points/GHz
TOTAL
5022 points/GHz
4466 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