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Current SLI Support (or lack of)

check in your bios settings - the specs list speaks about making sure the x4 slot is set to x4 mode when the other 2 slots are populated - the manual is a bit ambiguous about what happens when only PCIEX16 and PCIEX4_1 are populated, as it only mentions that X8 will drop to X4 when X4_1 is also populated

the first 3 orange slots are all run off the CPU, so there's no reason why it can't run at X8/X8 when only any 2 slots are used

GPUZ should also tell you what they are running at
 
shankly1985 said:
scroll down here..

http://www.gigabyte.com/products/product-page.aspx?pid=4514#ov

1GPU - 16x
2GPU - 8x - 8x
3GPU - 8x - 4x - 4x
4GPU - 8x - 4x - 4x - 4x

Going from what I have read, he should be running 8x and 4x
Click to expand...

Unless, the 3 lanes from the CPU share 16x regardless of how many cards? That makes sense. I would have to prove this by switching the 2nd card from lane 2 to lane 3 and viewing in GPU-z.

Unfortunately, I don't have a second card..... yet..... :D
 
Hi,

I have 2x 970 Windforce OCs. They are in a board where the only possible combination is to have them sandwiched together unfortunately.

At 100% fan in Crysis 3 the second is running at 54'c and the other at 75-78.

Interestingly though 100% fan doesn't seem to do a whole lot more than 70% temp wise. I have moved them apart as much as possible with the PCI brackets (no risk to card, just probably doesn't do the PCIe slot on the board much good) and have a fan blowing directly over them which has helped a bit.

What you really must be careful of if having two of them together is backplates. If you have backplates they heat up significantly and will really screw things when you have two cards very close together. Consider getting a windforce instead of a G1 to avoid that problem, it'll probably clock nearly as well anyway.
 
Ste said:
Hi,

I have 2x 970 Windforce OCs. They are in a board where the only possible combination is to have them sandwiched together unfortunately.

At 100% fan in Crysis 3 the second is running at 54'c and the other at 75-78.

Interestingly though 100% fan doesn't seem to do a whole lot more than 70% temp wise. I have moved them apart as much as possible with the PCI brackets (no risk to card, just probably doesn't do the PCIe slot on the board much good) and have a fan blowing directly over them which has helped a bit.

What you really must be careful of if having two of them together is backplates. If you have backplates they heat up significantly and will really screw things when you have two cards very close together. Consider getting a windforce instead of a G1 to avoid that problem, it'll probably clock nearly as well anyway.
Click to expand...

The G1 has a windforce heatsink.

** Edit**

Do you mean a Windforce has no backplate?
 
Correct, the windforce OC doesn't have the backplate that the G1 has, so the rear of the card doesn't heat up so much
 
Ste said:
Correct, the windforce OC doesn't have the backplate that the G1 has, so the rear of the card doesn't heat up so much
Click to expand...

Good to know. I really like the back plate as with a windowed case the PCB isn't the most pleasing on the eye. I'm hoping this lane 1 and 3 set up runs 8x and that way I should have plenty of space between the cards.

Thanks.
 
String said:
Unless, the 3 lanes from the CPU share 16x regardless of how many cards? That makes sense. I would have to prove this by switching the 2nd card from lane 2 to lane 3 and viewing in GPU-z.

Unfortunately, I don't have a second card..... yet..... :D
Click to expand...

If the 3rd slot IS always 4x then you can test that with a single card
 
String said:
I had my 670 SLI setup at the time I bought this game, and it was disappointing. Kinda why I've kicked off this conversation really. It's bearable in a few games, but if the list stacks up then questions have to be asked about the viability of SLI setups.

Nvidia need to do more to support the facility, it's not as if it isn't in their interests... :rolleyes:
Click to expand...

The conspiracy theorist in me at the moment wonders if they are deliberately holding out so people buy the Maxwell cards. If Evil Within had an SLI profile I would be able to run it fine, as would you on your 670's.

Dead Rising 3 is the same.
 
Yeah I like the backplate to but it really is a problem if you have the cards next to each other.

My 670s were one with and one without backplate. The right way round the hottest card peaked at about 75, the wrong way round it went up to 90+ and throttled.
 
andybird123 said:
If the 3rd slot IS always 4x then you can test that with a single card
Click to expand...

Didn't think of that. I'll make sure before ordering the other card (if that's the route I decide on).

I'll be sure to post back and update for those who may find this thread on Google or whatever. In fact, I'll post in the MoBo section to see if anyone can confirm...
 
SLI is getting less impressive with each new "AAA" title , the profiles are shocking on some new ones and they rarely improve.

BF4, Crysis 3 and upcoming BF:hardline (Based on the open beta which had excellent SLI support) really were the pinnacle of SLI they had perfect profiles and worked like a treat!
It's a shame SLI gets bum support from Nvidia :( and games companies

Star citizen should hopefully be a good one for multigpu and maybe just maybe Battlefront 3.

I've had to screw around with Nvidia Inspector so many times to get a title that "Supports SLI/Multigpu" to actually get it to utilize both cards properly..

This is based on my own experience when it comes to premium game titles, Indie ones however and "AA" titles have been impressive EG: Alien: Isolation, Sniper elite 3. Out of the box support was great and even left me room to screw around with anti aliasing and downsampling

As always multigpu is hit and miss, sometimes I wish I had just bought a more expensive powerful single card as the bottom card isn't used as much as I would like it to be. Thankfully the 670 is still a trooper and provides me 60fps or above in most titles but alas that wont last.

As for heat, fan noise etc it's all fine. On a very warm day I can hit 75c top/65c bottom after a good amount of time and don't even notice the tiny 13mhz throttle on the top card if it hits there
otherwise mostly top will stay around the 68c mark and bottom only ever seems to get to 65c this is in a decent SLI working game (BF4 ultra + 2xMSAA). Interestingly when on a game that can't use SLI the top card still hits 65-68c and bottom stays around 45c so I must have alright airflow ?
 
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True although the 670 was never designed to use 4GB and infact can't use the full amount, but I have seen 3GB used so it's better than 2GB I suppose
that and I was lucky to get two cards that clock identically Ok so I had to use a custom bios on the bottom card to open up the power target for more room but they both clock to 1202 / 7008.

Regardless I think Nvidia need to sort it out on their drivers side, the profiles just have not felt as good lately. If that's to do with them rushing it out or if its the game makers themselves I'm not sure, But I have feeling its a combination of both.
 
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