8800 or 8900 on Dell E520?

Yes, u have a PCIe slot so its possible.

You can double check what CPU u have in order to know if would be a bottleneck or not. But its not going to matter too much anyway, cause it wouldnt be enough of a bottleneck to bother u.

Power supply most definitely needs to be replaced. You want a power supply that is a over 500W with atleast 30A on the 12V rails.

I ordered the Dell PC yesterday without thinking about the PS, but it sounds like I will need to upgrade the PS regardless. I was just hoping that I didn't need to buy a Dell PS and a normal PS would work.

When I get the machine I'll put down whats written on the side of the PS.

Oh and Dell doesn't let you overclock? No wonder everyone hates dell! But I can't complain about their prices, its cheaper than what I can buy the parts for.

thanks,
Dan

That is actually not true. The whole is not cheaper than the parts, thats a misconseption. Infact they charge u more money for the warranty (wich u dont need because each component has it's own warranty), the building, and of course the name (wich is always a very good buy ).
But even if it was a little cheaper, u now having to replace everything makes it a whole lot more expensive.

But I guess im not helping, am I? As its already too late..

yea, i know. the best you can do is 26 amps on the 12v rail

Its not true that the whole is more then the parts...I got an XPS 410 with a 6300, 1GB DDR 667 7300 LE 250GB hard drive 375W PS, case, motherboard, mouse, keyboard, vista home premium for $475

DellUser1, now looking at it, your right it doesn't have the space for a 8800. Would it fit a 7900GS/7900GT or the upcoming 8600GS? Trying to find a decent card for the system, doesn't have to be the latest / greatest.

As far as power supplies goes, will either of these work in the Dell Dimension E520 system without modification to the cable? Also which one would you recommend?

http://www.newegg.com/Product/Prod [...] 6817153028

http://www.newegg.com/Product/Prod [...] 6817104954

http://www.newegg.com/Product/Prod [...] 6817159040

Also, how can you tell how many Amps it can handle/output?

Thanks,
Dan

Sorry mate, I have a friend with a E510 and his power supply does not have any 6 pin PCI-E connectors. Seecondly, he only has one molex. Lastly, The case does not provide enought space for a 12 inch+ card, it has about a 9 inch card and due to the fact that it is a weird version of BTX, it can not use 2 space cards. This i am sure of.

I posted the links above for a new PS. Thouse would include a 6 pin PCI-E connector right?
12 inch+ card, whats this referring to?

The 7900GS/7900GT/8600GS don't all of these only use 1 space card?
What do you think is the best card I could get for this E520 machine if I swap out the PS?

Thats a pretty OK price actually. Course u cant overclock or upgrade, so ur pretty much fucked.