- Processadores (Intel SU vs P7450, entre outros)

I've made a small comparison between these Intel SU vs P7450 processors, and I decided to expose it here:

• Intel® Core™2 Solo Processor ULV SU3500 (3M Cache, 1.40 GHz, 800 MHz FSB)
• Intel® Core™2 Duo Processor SU4100 (2M Cache, 1.30 GHz, 800 MHz FSB)
• Intel® Core™2 Duo Processor SU7300 (3M Cache, 1.30 GHz, 800 MHz FSB)
• Intel® Core™2 Duo Processor SU9400 (3M Cache, 1.40 GHz, 800 MHz, FSB)
• Intel® Core™2 Duo Processor P7450 (3M Cache, 2.13 GHz, 1066 MHz FSB)

1. SU3500 has only one CPU;
2. P7450 is faster (2.13 GHz) than all the others (1.3-1.4 GHz) and has a 1066 MHz FSB, so the RAM memory can be used at a 1066 MHz speed and take total advantage of it, while the other CPU's are limited to take advantage of only 800 MHz;
3. P7450 spends (much) more energy than all the other 4, wich is the real advantage from all other CPUs over it, which means that all the others have more autonomy. Comparing with SU9400 (the most powerfull of the SU's), the P7450 consumes more than half the maximum energy , in a proportion of 25 Watts to 10 Watts concerning the SU4100/7300/9400 (so it says in the Intel website). The SU3500 is an ULV and spends 5.5Watts, which is almost half of the other SU's, but like I already mentioned, it has 1 less CPU unit;
4. The P7450 and the SU4100 don't have IntelVT (CPU extensions to optimize performance in virtualization tasks, a feature of less interest to those who don't use virtual machines);
5. And as a final note, the actual CPU Intel series performance "ladder" is something like this, concerning the CPU's that I consider to be useful when buying a laptop: Atom >> SU >> P >> T >> i5 >> i7 (performance) / i7 >> i5 >> T >> P >> SU >> Atom (battery life).
   

If one uses the laptop to do the basic day-by-day tasks, some gaming and the battery life is not critical, one should use the P7450.
If battery life is everything and processing power is actually not required at all, the SU3500 performs a little better than the actual Atom series and spends less the energy of all other SUs.
If battery life and processing power are required, I would probably go for the SU7300/SU9400.
If virtual machines are critical to use, it's important to have IntelVT, but I don't really know the difference between the SU7300/SU9400 IntelVT performance boost and an actual P7450 with a better clock and FSB speed (using DDR3 1066 MHz RAM memories, of course).

I found a great link, with an updated benchmark between several CPUs: http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html