I'm a little late with this one, but ZOTAC has unveiled a new water-cooled GeForce 9800 GTX graphics card:
"HONG KONG – Jun. 10, 2008 – ZOTAC International (MCO) Ltd., an award-winning NVIDIA AIC, today unleashes its liquid-cooled, near-silent single GPU graphics card – the ZOTAC GeForce 9800 GTX ZONE Edition. The new ZOTAC GeForce 9800 GTX ZONE Edition is the staple of quiet computing, delivering the power of NVIDIA GeForce 9 series graphics power with PureVideo HD video processing technology into a virtually silent graphics card.
Cooled by a custom water-cooling system, the ZOTAC GeForce 9800 GTX ZONE Edition delivers high-performance in DirectX 10 and OpenGL 2.1 titles while keeping thermal and noise levels to a minimum.
Unlike conventional water-cooling units available from third parties, the ZOTAC GeForce 9800 GTX ZONE Edition features a self-contained water-cooling system that requires no end-user maintenance. The self-contained unit comes already attached to the graphics card and only requires the user to mount the 120mm fan and radiator module."