"tell your
cousin"
. 32-bit OS uses 3.25GB RAM, right?? But is 4GB RAM utilized by the 'demanding' games on 32-bit OS???
Buddy that's not true. 32 bit OS doesn't have 3.25GB mem limitation.
For eg. Windows Server 2003 32 bit Enterprise Edition SP2 Supports 64GB Ram.
Windows Server 2003 32 bit Datacenter Edition SP2 Supports 128GB of Ram.
But, 32 bit consumer grade OS like Vista & XP 32 bit editions have such limitations.
For 4 GB Ram - I've said to get 2x 2GB Ram & Run them in dual channel. Coz Dual Channel does gives 15-30% more bandwidth compared to single channel.
So all memory intensive apps will run faster.
32 bit programs can support a max mem of 2GB. So games & other programs
which can utilise 2GB ram will benefit even more.
Also you can always go for 64bit OS & get more performance.