I'm considering upgrading the RAM on my laptop, but I'd like some advice before I buy. My laptop is an Acer 5920, running Windows 7 32-bit. The specs are listed here http://www.miniputer.com/Acer/Aspire_5920.html . My model is running an Intel Core 2 Duo T7300 processor) with 2GB of RAM installed. I'm considering upgrading to 4GB, using 2x2GB SODIMM, DDR2 sticks as recommended by the Crucial website (http://www.crucial.com/uk/upgrade/Acer-memory/Aspire+Notebooks/Aspire+5920-upgrades.html). I understand that my Intel GM965 Express will only use RAM at 667MHz, so there's no need to buy 800MHz. Is this correct? I've been quite confused by online discussions regarding how much RAM Windows 7 32-bit can recognise - will the full 4GB be utilised? If not, how much can my OS utilise, and will it make noticeable difference to the 2GB installed?