RV560 will be the ATI Radeon 1650XT
@ 2006/07/18RV560 is nothing much more than the UMC chip, an 80 nanometre semiconductor with 12 pipes and 256 bit memory support. ATI decided to brand it as the Radeon X1650 Pro. This clearly means that this chip aims to replace the Radeon X1600 Pro cards. We are not sure what ATI will call Radeon X1650XT at this moment as it might even use faster clocked RV570 chips.
7900GTX
7950GX2
neither company has been doing much good name tagging since the first nVIDIA Geforce and ATI Radeon