ASUS Extreme Dual N7800GT
 

Noise then, is one of the benefits of this quite simply gargantuan card
from Asus. It’s quite massive, measuring 245 x 130mm, so you’d better be
sure you can fit it into your case before considering it. It’s this large
because of the large heatsink and fan and extra power requirements from
the two 7800 GT GPUs that Asus had mounted onto the PCB. Of course it’s
not a new idea. 3Dfx did it ‘Back-in-the-day’ in 2001 with its ill-fated
Voodoo 5 5500 sporting dual VSA-100 chips, ATI flirted with it with its
Rage Fury Maxx and recently Gigabyte reinvigorated the genre with its 3D1,
which featured two GeForce 6600GTs.

http://www.trustedreviews.com/article.aspx?art=2358