Sct 775 2.5slot SLI Capable board?

Scania

Scania

Scania

Caporegime
Joined
25 Nov 2004
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On the road....
Thinking of trying SLI in my old Sct 775 Rig, I currently have a GTX580 Asus DirectCUII 1.5GB and have the chance of another identical card for effectively nothing(!) and I have a Q9550 Cpu to beef up my existing setup, I imagine my current Quad won't cut the mustard...

Thing is, they are huge cards and I'm assuming SLI will be a tight fit to put it mildly....

Would I need a specific design of board or would any SLI capable board manage these cards? They occupy 2.5 slot spaces.

Apologies if this is a noob question, the last time I ran SLI was with two Voodoo 2 Cards!

Thanks.
 
As far as I recall, on s775 fir sli you are limited to nforce sli boards only. Of which there were 3 models.

680i, doesn't support 45nm quads. Then the 780i, which does. The other was the 790i which used ddr3 ram. The P45 chipset boards were xfire only.
 
Thanks Setter, looks like my options are far more limited than I'd imagined!

Probably back to plan a: which was a new CPU / Board upgrade before I scratch the itch, which is all this really is, whilst old, my rig suits my needs just fine even with games like BF4 as I only have a 1680x1050 monitor which my existing 580 handles superbly....
 
There were also the 650 and 750i series, though I never had any experience with those. The 6 series were great for dual core overclocking, but very poor with quads.
 
Ahh, not quite so limited then maybe?

I guess I need to do some Googling for old benchmark setups and see what worked!
 
The 680i based board I had was the worst motherboard I have ever owned, and I'd advise anyone to stay away from them. The chipset ran like a nuclear reactor, which to be fair did save on heating my office room in the winter :D.

A friend had the 750 chipset which although theoretically lower down the range was much better - IIRC it only ran at PCIe at 8x/8x, although that shouldn't be an issue as it's Gen 2.
 
Awahwah said:
I have a 790i Ultra board for sale in the members market, I'll link it for you.

Edit,

Link if you are interested

http://forums.overclockers.co.uk/showthread.php?t=18659417
Click to expand...

Thanks - I'll give it some thought, thing that bothers me about it is you state you've only powered it up minus CPU & RAM, I'm a little reluctant to buy some RAM only to find maybe it doesn't work and I'm left with RAM that's otherwise of no use to me.....
 
Scania said:
Thanks - I'll give it some thought, thing that bothers me about it is you state you've only powered it up minus CPU & RAM, I'm a little reluctant to buy some RAM only to find maybe it doesn't work and I'm left with RAM that's otherwise of no use to me.....
Click to expand...

No worries.
 
Scania said:
I thought you needed 16x? #noob, I know! :o
Click to expand...

IIRC the 680i board provides 16x/16x at PCIe1 speeds, as PCIe2 has twice the bandwidth it will be equally fast at 8x/8x (edit: on 750/60). 780i/790i would be the best of both worlds giving 16x/16x at PCIe2 speeds. However, the latter will likely only make a few % difference in performance.
 
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