First, AFAIK, there is no read limit. There is however a write limit - and lower in case of MLC disks than in case of SLC. I don't know the exact numbers, but I did the estimates and real performance comparison for our server (it's a year back), and I found out that the life expectancy for the OCZ Vertex MLC disks was overstated four times (approx) by the manufacturer, compared to real life expectancy we expected on the production servers.
Once again I repeat that it was a server that wrote constantly across the whole disk.
Generally speaking, in a typical home user environment, you read much more often than you write, so you should be problably okay. Larger disks also last longer, because the wear-and-tear balancer in the firmware will spread the writes across more cells. It's also helpful to make sure you have TRIM working, and also garbage collector, if your disk supports them.
Some useful tips:
1: Verify that TRIM is enabled as in the prior messages.
2: Make sure your AHCI controller is using a TRIM compliant driver as in the prior messages.
3: Make sure the defrag program is disabled for the SSD... Admin tools/Services set Disk Defragmenter to disabled. I use auslogics disk defrag (free) for my other drives manually. U almost never have to defrag an SSD. It can lower its life expectancy.
4: Page File. There has been much debate about this. The idea that no one needs a page file is a bunch of crap. I have tried it both ways, moitoring writes and reads, and YES, it IS used even with 8 Gigs of RAM. I left mine at 2 Gigs, but it is just fine at 1 Gig. Writes to the page file are sequential now. Page file is also read at boot time to speed things. Keep it on your SSD where it belongs.
5: Superfetch/prefetch/bootfetch: Windows 7 does not always turn it all off as it should. The purpose of these things are to pre-load the programs you load from slow hard drive to fast memory (cache) in case you want to run them. With your SSD, there is no need. We will disable them and free up some memory and resources and stop a LOT of writes to the SSD.
To disable Superfetch, etc: Admin tools/Services. Select superfetch and set to disabled.
Run regedit and change the following values: HKLM/System/CurrentControlset/Control/Session Manager/Memory Management/Prefetch Parameters and change the key valus of Enableboottrace, enableprefetcher, enablesuperfetch all to 0 and exit regedit.
Source:
http://www.sevenforums.com/tutorials/70822-ssd-tweaks-optimizations-windows-7-a.html