GeCube Radeon X1650 PRO GDDR3GeCube clock its X1650 PRO SKUs -- both powered by GDDR3 instead of DDR2 -- at 600/747, up from the reference clocks of 600/700 (at least on the memory side).
GeCube uses a cooler design that's been around since the X800 days, and to mostly good effect. It's not that quiet and has no thermal control, but it cools the DRAMs too and works effectively. Both DVI ports are dual-link capable as they are on the Sapphire, and you also get the very same output connector for S-Video and component connection too.
Presentation and Bundle
Ruby gets box-art honours and the bundle is almost identical to that of the Sapphire, but you don't get any value-added software like PowerDVD. GeCube provides a 2-year warranty on its graphics cards.