Yes, this is an old thread. I am posting here because this is the first Google result for "SSD disable pagefile".
1. Yes, the pagefile will wear out an SSD and make it unreliable. Due to the wear leveling abilities of SSDs, the bigger the SSD and the more unused space you have on it, the slower the wear out will occur.
2. No, you don't need the pagefile, though if it is turned off you need to be at least somewhat aware of how much you are using. Leave the Task Manager open and look at the memory usage once in a while.
If you just run one 3D game at a time and close other programs when you do that, then sure, you can run with 4 gig and no page file just fine.
However, I often have five Firefox windows open with 25+ tabs open in each window, plus iTunes, and maybe a suspended 3D game in the background, while I open another 3D game...
3. Note, there is a built-in limiter in Windows Vista/7/8 that tries to prevent out-of-memory conditions if more than 75% is in use. (You can also hit this if you have a pagefile, but there isn't enough disk space for it to grow bigger.) If you hit this limit, Windows will force programs to close and pop up a warning.
For significantly large memory systems running without a pagefile, this results in a ridiculous amount of wasted memory that Windows will NEVER utilize.
Do you have 4 gig of memory and no pagefile? Windows will never use the last 1 gig.
Do you have 16 gig / no pagefile? Windows will never touch the last 4 gig. (!)
Part of the reason for recommending a disk-based pagefile even if you do have tons of memory, is just so that Windows can use this otherwise wasted area. The pagefile may never be used, but it also means the limiter is not triggered for high main memory usage.
4. You can disable the limiter to allow 100% memory usage without the pagefile, by deleting three registry keys, but programs and Windows itself may misbehave severely if your system really hits the 100% mark.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WDI\DiagnosticModules\
{45DE1EA9-10BC-4f96-9B21-4B6B83DBF476}
{5EE64AFB-398D-4edb-AF71-3B830219ABF7}
{C0F51D84-11B9-4e74-B083-99F11BA2DB0A}
This is discussed in more detail here:
http://www.kylirhorton.com/2009/disabling-low-memory-messages/
5. Creating a RAMdisk from your system memory for the pagefile is just stupid. By doing that, you're reducing available memory, in order to accelerate the operation of a mechanism that is intended to deal with... reduced available memory conditions.
Since this pagefile is limited to the size of the RAMdisk, the end result is identical to just turning off the page file and not using a RAMdisk.
Note, this is different from the old i-RAM device that used separate memory modules on a card accessed via SATA, for a dedicated RAMdisk:
http://en.wikipedia.org/wiki/I-RAM
6. Yes, fast enterprise grade hard drives (10,000 - 15,000 RPM) are an option, but they continuously operate at high power and need lots of airflow to dissipate the heat they generate.
If you're using 10k/15k drives specifically for faster pagefile performance, your money would likely be better spent on 4/8+ gig memory sticks.