here is the same question.

i have a asus P5K-VM G55 Barebone with a GMA 3100 on-board Intel Grafikcard. Also i have a ATI Radeon HD4550. Unfortunatly no support for a higher resolution as 1024x768. :-(

So i also need to buy a new low profile grafikcard.

Which one is the best choice for me - maybe a full supported nvidia or ati that is cooled passive?