Power connector on MB for sli should I use?

[ashmanuk67]

I've just found out that my motherboard has an extra molex power connector for sli/Xfire.
Is there a benefit to using this extra power connector ?

Motherboard is an ASROCK Z68 Extreme 4 Gen 3

 

[Deceptor]

As far as I'm aware it's for stability which may be needed when clocking the nuts off the cards. I have a modest OC on my 670 SLI setup and my MSI MB has the same connector - no diff with it connected or not and I couldn't find any stability increase when trying to push the cards as much as they could go.

If you get lucky and your GPU/Memory can obtain uber OCs then the extra power might be beneficial.

 

[spixelspixel]

I'd say its more for tri sli rather than 2 cards. There is too many motherboards that support regular sli just fine without any additional power.

 

[ashmanuk67]

OK guys thanks for your input

 

[spankingtexan]

I've been running a couple of cards for the past three weeks without using the extra power connector and their clocked up, I've had no stability problems at all.