Need help with comparing some ATi Cards

[VoBoy]

Can any one tell me the comparable Radeon card to the following Fire GL's? I'm looking for a cheap Dual DVI solution, and found some on ebay. Nvidia's old Quadro line is still over the 50$'s and Dual DVI on a 6600GT runs for 120$+. So if you could help me out that'd be great!

Fire GL 4 = ?
Fire GL Z1 = ? (My guess is 9700)

 

[LPerugini]

I have a fire GL4 that just came out of a surplus HP x4000 CAD workstation, that I am looking to trade. It has dual DVI's. Works fine, but is too loud for my uses. Interested? I am looking for an Nvida based card that will work in an AGP4x pro slot