The good thing about the upcoming RV630 is that this 65 nanometre chip doesn't
need any external power. So you can forget the PCIe power connector from your
PSU as you won't need it.
The PCIe slot power will be enough for this 65 nanometre card. OEM seems to care about the power consumption and we learned that both RV630 aka Radeon HD 2600 series and RV610 aka Radeon HD 2400 series will be very popular among Dell, HP and FSC – Fujitsu Siemens.
The 65 nanometre process solves you a lot of problems especially when it comes to the power consumption and heat dissipation.