The slots are universal. It's likely that something was wrong with the card.
It's only when you get into the realm of using two or more graphics cards in an SLI or Crossfire setup that you need to start worrying. And you're nowhere near that, so meh.
There is no difference between that cards aside from the fact that they are made by different comapanies and they are different models. As long its the same type of slot (PCIe or AGP) you should be fine. Also make sure you PSU is powerful enough.
Alright thanks a lot to everyone who's suggested something. This is what I'll get. Newegg.com - SAPPHIRE 100171L Radeon X1950PRO 512MB 256-bit GDDR3 AGP 4X/8X HDCP Video Card - Retail Newegg.com - Intel Pentium 4 3.0E Prescott 3.0GHz 1MB L2 Cache Socket 478 RoHS Version Processor - OEM Oh I have a 500w PSU is that enough to handle the video card?
Does your PSU say what it's Amp rating on the 12V rail(s) is/are?
Isn't 30 amps recommended?
Here's my PSU FSP >> PC Power Supply >> Retail Package - Blue Storm >> AX500-A I don't know much about amps and volts, does it say 30 amps?
That PSU should be able to handle any of the videocards listed.
I was probably a bit high when I stated 30 amps. I think your PSU is rated at 18-20 amps on each of the separate 12 volt rails.
The 30A requirement for using an X1950Pro (or higher) is in reference to total sytem power. Most PSU's with multiple 12V rails are rated at or above 30A total current output. As SteVen said, your PSU is fine for all the VGA's listed.
It looks to me that yours is rated at 36 amps total. 18 amps on each of the rails.