Some applications do require a pagefile regardless of how much ram you add to win7. You could run into unexplained crashes if you switch it off. I would much recommend you get at least a 120gb SSD and leave pagefile to be automatically handled by windows. It is not necessary to make the pagefile a fixed size either because fragmentation doesnt really affect an ssd much.
Other useful things with SSD:
- Disable hibernation and use Suspend to RAM to sleep your pc (unless you use a laptop and want to "sleep" without a power source for more than a couple of days.)
- Leave the Pagefile on the SSD, this is one of the best features of the SSD, no more HD thrashing because its on a SSD.
- Disable defragging on the SSD drive. It will just thrash your drive for no reason, and make wear and tear a bit more.
- Use a single C drive partition for the whole SSD.
- Switch off the automatic defrag on your C drive as it isnt needed on the SSD.
Some more info on the pagefile here:
http://forums.anandtech.com/showthread.php?t=2152483
Gabor