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Core i3-550 vs Core 2 Duo P8400


Description
The i3-550 is based on Westmere architecture while the P8400 is based on Core.

Using the multithread performance as a reference, the i3-550 gets a score of 41.5 k points while the P8400 gets 21 k points.

Summarizing, the i3-550 is 2 times faster than the P8400. To get a proper comparison between both models, take a look to the data shown below.

Specs
CPUID
20655
10676
Core
Clarkdale
Peryn-3M
Architecture
Base frecuency
3.2 GHz
2.267 GHz
Socket
LGA 1156
Socket P
Cores/Threads
2/2
2/2
TDP
73 W
25 W
Cache L1 (d+i)
32+32 kB
2x32 kB
Cache L2
256 kB
3072 kB
Cache L3
4096 kB
0 kB
Date
May 2010
July 2008

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
i3-550
P8400
Test#1 (Integers)
7919
2428 (-69.34%)
Test#2 (FP)
5373
5402 (0.55%)
Test#3 (Generic, ZIP)
3181
2128 (-33.11%)
Test#1 (Memory)
2720
1426 (-47.57%)
TOTAL
19192
11384 (-40.68%)

Multithread

i3-550

P8400
Test#1 (Integers)
17202
4813 (-72.02%)
Test#2 (FP)
12718
10581 (-16.80%)
Test#3 (Generic, ZIP)
8714
4176 (-52.08%)
Test#1 (Memory)
2861
1449 (-49.37%)
TOTAL
41495
21019 (-49.35%)

Performance/W
i3-550
P8400
Test#1 (Integers)
236 points/W
193 points/W
Test#2 (FP)
174 points/W
423 points/W
Test#3 (Generic, ZIP)
119 points/W
167 points/W
Test#1 (Memory)
39 points/W
58 points/W
TOTAL
568 points/W
841 points/W

Performance/GHz
i3-550
P8400
Test#1 (Integers)
2475 points/GHz
1071 points/GHz
Test#2 (FP)
1679 points/GHz
2383 points/GHz
Test#3 (Generic, ZIP)
994 points/GHz
938 points/GHz
Test#1 (Memory)
850 points/GHz
629 points/GHz
TOTAL
5998 points/GHz
5022 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. 3.7.8