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SLIing gtx280

S

smd86

n00b
Joined
Dec 10, 2007
Messages
11
I have a single EVGA 280 SCC right now. Would it be possible to SLI my SCC edition with a standard clocked EVGA gtx280? or would I have to downclock the SCC for it to work right?
 
It should work. No down-clocking necessary on your end. The drivers will do any clock adjustments necessary. Though I can't recall if it was ever settled for certain whether any actually takes place.

Having said that. . . I'm the paranoid sort. So I always make sure to get the same make, model, and BIOS revision on my SLi rigs. :D
 
Yeah I bought the overclocked edition because I didnt think I'd SLI.

has anyone actually SLI'ed 2 cards with different clock speeds ect?
 
The SSC card should automatically downclock when in SLI.
 
lol I appreciate the replies guys, but I'm getting conflicting answers. Whos right? heheh:eek:
 
it will default to the lowest clock speed, of course. a faster card can always go slower, but a slower card may not be able to overclock. i think thats pretty much abc type info.
 
I think everyone's saying it will work.

The only dispute (as has been the case in the past) is whether the faster card is down-clocked or not. I've seen it said that the faster card is not down-clocked, and that SLi just balances the load between them appropriately. But I'm not sure I buy that.

Either way, it works.
 
Which ever card sits in the primary (Top or nearest to CPU depending on motherboard orientation) PCI-E slot dictates the speed. If you place your SSC in the primary, the stock should automatically OC. If the stock sits in the primary, the SSC will downclock.
 
so then what happens if the slower card is unable to overclock to the speed of the ssc or whatever? say if 1 card is a really highly overclocked bfg or msi and the other is a vanilla palit? this is from the nvidia slizone sli faq. putting the higher speed card in the primary slot can "render the setup incompatible"

Q: What cards can I use together in SLI? What are the requirements?
A: Right now, users are limited to using two (or more, if applicable) cards that are from the same series (7600, 7950, 8800, etc.) and are the same model (GS, GT, GTX, and so on.) However, the manufacturer, VGA BIOS, and clock speeds may all differ. When using two differently-clocked cards together, it's recommended that the slower card be installed in the primary PCI-E slot. This will automatically gear down the other card's clock speeds to match those of the master card, which will keep them in sync. Depending on the driver support the faster card may be installed as the master, which will raise the clock speeds of the other card, but this may not always be the case. Installing the faster card as the primary GPU can still sync the cards to the lower speeds or the overclock may not be forced on the other card and render the setup incompatible in that configuration.
 
vanilla_guerilla said:
so then what happens if the slower card is unable to overclock to the speed of the ssc or whatever? say if 1 card is a really highly overclocked bfg or msi and the other is a vanilla palit? this is from the nvidia slizone sli faq. putting the higher speed card in the primary slot can "render the setup incompatible"

Q: What cards can I use together in SLI? What are the requirements?
A: Right now, users are limited to using two (or more, if applicable) cards that are from the same series (7600, 7950, 8800, etc.) and are the same model (GS, GT, GTX, and so on.) However, the manufacturer, VGA BIOS, and clock speeds may all differ. When using two differently-clocked cards together, it's recommended that the slower card be installed in the primary PCI-E slot. This will automatically gear down the other card's clock speeds to match those of the master card, which will keep them in sync. Depending on the driver support the faster card may be installed as the master, which will raise the clock speeds of the other card, but this may not always be the case. Installing the faster card as the primary GPU can still sync the cards to the lower speeds or the overclock may not be forced on the other card and render the setup incompatible in that configuration.
Click to expand...

I guess it will crash/ atrifact or just show signs of to high an overclcok if the lesser card cannot keep up, if not maybe you could use rivatuner to downclock the oc card abit if it cannot keep up,another option is to use rivatuner find the best stable clocks and then use a program called nbitor wich can change you clock speeds in the firmware of the card, to be truthfull I'm not the best person to ask about this someone else will comment, but i say this much i tried it on 8800gts and it would no longer show in SLI after this but worked fine???? to be truthfull I'm not so sur ethat the card was fully supported though it was a good while ago.
 
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