i should have a ti4400 in a day or so. ill let you know on the measurements.
BUT the cards to have the standard 4 holes around the chip like all others. the only difference is the additional 2 holes used for mounting the heatsinks is different. these are the holes that most water blocks use to mount.
here is a pic of the gainward ti4400 and a DD gf3 block that i took.
its a crappy pic but you can see all the holes
http://digitalsimplicity.com/mike/misc/gf4.jpg