Hi , my friend have a problem with 4 x 780 GTX asusDU2-OC

 

in 3 way with the flexible bridge there no problem but in 4 way needed rigid bridge and the cover of the vga and too big

 

http://videocardz.com/images/2013/06/GTX780-DC2OC-3GD5_back.jpg

Use multiple flexible bridges like this:

 

1->2

1->3

3->4

I'm surprised that MSI, Asus etc are making this mistake with heatsink design

msi has fix it on 780L

 

but now the cooler is too big for 4way