Crossfire compatability.

if i have a X1900XT, ATI built, can i add a Sapphire X1950 Crossfire edition card?

the compatability list says that any cards in the same "series" would work.  so i figure theyre both 1900 series.

the 1900 crossfire edition i cant find anywhere.  

http://www.google.com/products?q=x1900+crossfire&hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=GGr&um=1&checkout=1&sa=X&oi=froogle&ct=checkout-restrict
Check that out.
jpazhman

You are Firefox? Awesome man, awesome.