Dont be worry about wear on system drive ....U can rewrite 20-50GB(depends on the size of an SSD) on your drive every day (u dont write all that much every day do u?) and it will be years before the end. Isn't the idea of having SSD to to have super fast PC?
Here read on The Page File
The Page File
1. The average user is best served by LEAVING THE PAGE FILE ALONE. Windows 7 does an excellent job of managing the page file settings for most people.
2. For 99.999% of the configurations on the planet you need a page file. Windows 7 itself wants one and a number of programs out there do too. If you think you can run your machine optimally without a page file you do not understand how Windows 7 (or any NT based OS works).
(Please don't email me to argue this, I won't respond. Find a forum to argue about it.)
3. The recommendations below are not designed to give you the highest scores on a synthetic benchmark but to give you the best overall performance for your system (including stability). The size of hard drives today are huge and making the page file a little larger than it "needs" to be hurts nothing and you're covered if you're ever doing something that requires more.
From Microsoft:
"Page file size equal to RAM: Prior to Windows 7 the default paging file size was determined differently on different versions of Windows. But in general terms, when the paging file size was configured as “system-managed†its size would typically be calculated as RAM x (some number greater than 1) or RAM + (some number).
In Windows 7 and Server 2008 R2 the default size is equal to the amount of memory installed in the machine. Your gut reaction to this is probably the same as mine was – to get a successful complete memory dump the paging file needs to be a little larger than RAM. How much larger probably goes back to what version of Windows you are running and other factors, but 300 MB is generally considered plenty of padding for the purposes of getting a complete dump.
Not to worry. A default installation of Windows 7 or Server 2008 R2 is configured to generate a kernel memory dump and also with a system-managed paging file size. So a paging file equal to RAM is plenty. If you decide that you want to capture a complete memory dump, simply change the dump option to “Complete memory dump†and restart (be sure to leave the paging file size as system-managed). After the restart the paging file should be RAM + 300 MB. This applies to both client and server SKUs."
ASKPERF - Windows 7 / Windows Server 2008 R2: Upgrade Paths, Registry Enhancements, Crash Dumps and Page File Sizing
One hard drive:
If you only have one hard drive or your other drives are significantly slower than your OS drive. Leave it alone.
Two hard drives:
The second drive should be near as fast or faster than the OS drive or there is no reason to do this.
Make 2 page files, one on the OS drive, one on the first partition of the second drive. The page file on the OS drive should be at least 300MB. The second page file should be equal to the amount of RAM (physical memory) or System managed size (preferred).
***Author's note - Based on emails I've received I do not seem to be making myself clear. If you have one hard drive DO NOT MOVE OR MAKE A SECOND PAGE FILE. If you have 2 drives and you make a second page file you should leave at least a small page file on the OS partition. The second page file should be on the FIRST PARTITION of the second drive.
http://www.tweakhound.com/windows7/tweaking/7.html