For GTX670, there is the reference short PCB and then there are long PCB which can either be the reference GTX680 PCB or one designed by the manufacturer (eg Gigabyte perhaps?).
Zotac GTX670 uses the GTX680 reference PCB.


And, MSI GTX670 reference vs MSI GTX670 OC

Note the MSI GTX670 OC also seems to use the reference GTX680 PCB

(pic source: http://we.pcinlife.com/thread-1899607-1-1.html)
Zotac GTX670 uses the GTX680 reference PCB.


And, MSI GTX670 reference vs MSI GTX670 OC

Note the MSI GTX670 OC also seems to use the reference GTX680 PCB

(pic source: http://we.pcinlife.com/thread-1899607-1-1.html)





















How come that short PCB can deliver 9000 score in 3DMark 2011??
congrats Tiger 


Its already the 10th on half the world 

























