Question about RAM, GPU, and price

[SWPalmer7]

Hey all!

My cousin recently gave me a free Alienware Area 51 7500.
It has stock everything if I am correct, with a Intel Core 2 Quad Q6600, but it doesn't have a graphics card installed. The motherboard is SLI enabled so my question is should i get one good Geforce card or two older ones working in SLI and which one will be better for my CPU in terms of bottlenecking. Which card or cards, should I get? Budget is preferably under 75. It also only has 1gb of RAM and as i understand it can only have up to 4, but the motherboard supports 8? What would happen if I put in a 2x4 in, instead of a 2x2, will I be able to use the extra 4gb of ram? 4gb is not that much anymore, especially when running 2 graphics cards.

 

[jitpublisher]

Graphic cards now, on an even comparison scale, are more than twice as fast as cards that were available when that PC came out. A good single mid range card is all you need to be a great match for the rest of that PC. You also must have a PSU big enough to run your graphic card selection. A plus about modern cards, they require less power, as they have become much more power efficient. They run cooler too. Go here and read this.
http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107.html
Install memory in exact pairs. Memory will only run in dual channel mode with matching sets in each, or both banks. If the PC has a 32 bit OS, get 2x2 for 4 gig. You must have a 64 bit OS to use more than 4 gig. If it has a 64 bit OS, or you plan to upgrade to a 64 bit OS soon get 2x4 for 8 gig.