THE FACTS
 
i have decided to do this molex mod on my e758 motherboard. after reading very carefully i found it is very simple to do. the method however would very from the e758 vs. the classified motherboards. with the classified motherboards a simple 2 12v leads are soldered to the 24-pin contact along with 2 ground leads to the 24-pin contacts. (per orientation of this mod guide: http://www.xtremesystems.org/forums/showthread.php?t=226942) the only reason this orientation works is because the traces in the classified motherboards are beefer than that of traditional motherboards. with that said, with the e758 or any other board but the classified boards, you need to solder directly to the PCI-E slot and bypass the traces so you do not burn them out running more power through them.
 
 
THE UNKNOWN
 
what is still unclear for me though is if i solder directly to the PCI-E slots per this mod : http://vr-zone.com/print/-vr-zone-s-pci-express-current-booster-mod/3101.html , is the red lead (3.3v) required? Im thinking not, but maybe someone could confirm this. The second thing that is unclear is will i need 3 seperate molex connections (one per slot for this to work) or can all 3 slot run off one molex? maybe someone could chime in here as well. An alternative option, assuming you do not need the 3.3v leads, would be to use a 6-pin PCI-E connection to power all the slot. because the 6-pin connector houses 3 yellow 12v leads and 3 black ground leads.
 
Once these question are answered and it is confirmed, I will do this mod and report for other to follow if you choose to do so as well. 
 
    (currently awaiting approval at xtremesystems to speak with LardArse (moderator) to get these answers)
if any one here has an account with them that could copy/paste this thread/text into a reply/new thread for him would be much appreciated. the soon these questions could be answer the better. - justin (Thank you)

i understand what you mean and will try running my setup as many say it will be fine, however if indeed the mod needs to be done this thread will be for all MB's not just the classified. 
 
still awaiting approval on the xtremesystems forum to be activated.
(if someone has an account the that could post word for word this thread or link it for LardArse to answer, would be great)

remenaker

Hay Hi CraptacularOne if you can run all that and no problums then I am not going to do the mod thanks for the info.
you the man.
I only have two GTX 480s and the plug runs cool.

If MB's without the molex connector for the PCI-E runs multiple GPU's without an issue, then mod is not required, but if they dont then the mod will be needed. the point really being is that only one member can confirm not issues with there e758 MB running multiple GPU's (3 way sli 480's). I have ran 2 480's and gts 450 physx and my 24-pin heated up to the point of melting if left at its current config. sure your not going to be running benchmarks all day, but maybe you will. also if your playing games such as crysis our high graphic games the 24-pin also heated up pretty good as well. 
 
NOTE:this mod is not for everyone and should only be done if you need it.

jrmitchell1983

Afterburner

Soldering Voids Warranties... Try this instead... (Link) and solder it instead...

very true, however if you just remove the mod before an RMA it will still be warrantied. (this has been confirmed by JACOB)

You are certainly correct. However, the waring must be put out there. Remember... NO visible modifications can be found without the risk of the warranty becoming void. I have seen more than one thread here where folks have had RMA's denied at EVGA in a similar situation. Even changing the BIOS on a GPU can void the warranty if you are unable to put the original BIOS back on before killing the card (For example).

AB awesome news!! Thnx for the link.

MORE INFO 
 
http://www.interfacebus.com/Design_PCI_Express_16x_PinOut.html
 
http://www.pcisig.com/developers/main/training_materials/get_document?doc_id=6d37ec2f8543fc1f9d8ace6264d08b469f57e5f1