I need a really good graphics card for a Dell Inspiron 537s this is in a slim case, the slot is PCIe. We bought a GeForce GTX 450 but it won't fit and would like something with similar features. This is for my son who is majoring in computer graphics. Thanks for any advice.
A normal card won't fit in a slim case. You are looking for a low profile card is what they are called. Here is a link to a card that is a low profile card. This is not and equal to the GTX 450 just an example as to what you are looking for.