Hi Hak Foo,
GT3 supports three add-in cards. Before we spec'd GT3, we researched common PC configurations. Our research concluded the vast majority of users typically don't use more than three add-in cards. GT3's shipping configuration is two, to support double slot graphics. With GT3's 1VGA-2PCI riser kit, GT3 supports one single slot VGA and two PCI cards. Originally, this was the configuration we were going to ship GT3 with, but when we went back and polled users, they preferred having double slot VGA support standard.
GT3's supports SLI/Crossfire. Though, we yet to announce the SLI kit.
GT3 cooling system is overkill. It has two fans in front; one 80mm and one 92mm. Each fan blows directly to the major sources of heat: CPU/Memory, VGA. The highest end systems we tested GT3 with, the front fans were running at 900rpm for day to day use.
We added the support for add'l 40mm fans in the rear to give users the ability to increase GT3's cooling capability.
The vast majority of motherboards available in the channel are ATX, thus giving users the best selection of motherboards to choose from.
Thanks for your feedback!
Sean Hall
GTR Tech Corporation
What good is a case that takes a full ATX board if you can only use two slots anyway? A uATX case might be wider, but it would also be shorter, give you more slots, and possibly a better cooling choice than FOUR 40mm fans.
If nothing else, it seems SLI/Crossfire are out of the question