oh, I did not notice.
I think that this is a bug of GPU-Z. It is recognized SLI in ORB.
http://3dmark.com/3dm06/14182155
Because I cannot present SS without the bug, this post is deleted.
And, I challenge newly.
I try again to 5770hawk OC at Dice in last weekend.
Core i7 960
msi Eclipse Plus
G.Skill Perfectstom F3-16000CL8T-6GBPS
MaxxNeo by TAM
Tek-9 Ver6.66 by Vince
3D06 : core 1270MHz/mem1300MHz
VGPU 1.42V
I'm sorry,poor English.
Thanks