Also Dowload AS SSD, install and open (do not need to run Benchmark) check the upper left:
.. Driver (Note For SF 1200 controller SSD - Yours is) it should show iaStor, NOT msahci
.. Alignment should show OK.
You are using the wrong driver (pcide). This driver will give you the poorest performance on a SF12xx SSD. Next is the default ms ahci driver followed by the better of the three iaSTOR (Intel's ahci driver.
Not sure if you can update the pcide driver to the iaStor - I had to re-install.
Need to download the Intel RST matrix driver (Ver 9.6 or latter.). You also need to download intel's "F6" driver (Caution, get correct version 32 bit or 64 vit). Put this on a thumbdrive. Install Win 7 custom install. On page where you select where to install windows, look for a little check box for additional drivers (should be lower left side).
Let me backtrack - I just looked and you did not specifiy which MB/CPU you were using.
(1) It is not a question about SSD brand, it's about the controller that the SSD usies, In your case, and mine (a Pheonix PRO on Gigabyte P55-UD4P MB), it is a sandforce 1200 and the southbridge on your MB.
What I should have verified (and what you should have identified) - is your system using a Intel chipset (ie x55 or x58) or is it based on AMD.
If AMD, Need to verify if AMD has finally put out an ahci driver that works with TRIM. Otherwise use the default microsoft default AHCI driver. (Forget intel drivers).
If your system is based on the intel platform, follow what I said in my previous post.
There are a couple of previous post on this subject. In terms of performance If you run the AS SSD bench mark, I think you will find your overall score to be very low, about 1/2 of what it should be. My score using pcide = 231. Reinstalled. using iaStor overall score = 471 which is very close to manuf stated performance.
Win7 should enable trim by default as long as you are in ahci mode. The only obstacle then is that some ahci drivers do not support trim (win7 sends the trim command but it does not get passed to the ssd firmware by the driver). The default win7 ms drivers do though.