Ok I'm mainly a console gamer; the last time I had a gaming quality pc was when vampire the masquerade: Redemption came out. Anyway I got a new computer in 2005 because my old shit box crapped out on me. It was an emachines t3990 which came with as you might expect pretty low grade parts but hey it was cheap and the cpu could be worse I guess. There was one problem however the ram they gave was defective and instead of being 256 it was like 238. So recently it started becoming a problem and  so I ordered a gig of ram but one my friends said I shouldn't both of them in my Computer at the same time because my 256 will slow the other one down. It that true?

 BTW if people are wondering how I play games that require pixel shader I use a program called 3D Analyze.

emachine it is impossible to fix without building an entire new PC

What about the ram question?

^no it wont

That PC doesn't even has an AGP port. It's an old socket 478 system with normal DDR RAM. You can't get much for it that can increase performance other than, like you said, RAM. As long as it's the same speed than the other stick, it won't slow it down.

But I strongly recommend building a new one. And the current RAM is not defective, it's less than 256 because it's pooling certain amount for Video RAM.

Z64dan

Thanks for the help

i would consider purchasing/building a new PC like fazz said

here is a pretty good deal

http://www.buy.com/retail/product.asp?sku=205611527&loc=273&pageFormat=20&rs=1cReviews

lol I know my comp is pretty out dated. I run a Intel Celeron D 335 / 2.8 GHz which should indicate I'm not a huge pc gamer. It still plays UT 2004 and Vampire the Masqurade: Bloodlines. Half-life 2 pretty well.