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[Anand] A Look At Triple-GPU Performance And Multi-GPU Scaling, Part 1 - Page 2

post #11 of 149
Quote:
Originally Posted by grunion View Post
That's on mobo manufactures IMO, course not enough people run triple cards for them to care, I guess.

And with tri fire, I don't know why anyone would go 3 over 2 anyway, I wouldn't.
Yeah, I guess it is the responsibility of the mobo manufacturers. My GA-890FXA-UD5 has its two x16 slots right next to each other (by that, I mean 2 slots away from each other so that dual-slot GPU's will be right up against one another). On the flip side, though, tri-Fire/tri-SLI wouldn't even be possible on a standard ATX mobo in a traditional case with 7 PCI slots if the GPU's weren't right next to each other...
post #12 of 149
Quote:
Originally Posted by hli53194 View Post
How are these cards supposed to get any airflow?
There are good cases for extreme air setups.
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post #13 of 149
Just noticed something, one of these 3 is not like the other.

Attachment 203593
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post #14 of 149
On average CFX scales a little better, but I wonder if the 580s were a bit CPU bottlenecked with a i7 920 only at 3.33Ghz. Anyway, AMD does very well considering the much lower price tag on the 6970.

As for 99C for the middle card... I think Anandtech is making a mountain out of a molehill there -- as anybody who is willing to drop $1000 on GPUs will make sure they have found a mobo that gives them a little room for air.
post #15 of 149
Quote:
Originally Posted by grunion View Post
Just noticed something, one of these 3 is not like the other.

Attachment 203593
Wouldn't that.... not function? I don't remember SLI working with differing cards, even within the same series.
post #16 of 149
A bit weird that they would use 11.4 preview driver and then use 266.58 released in January instead of 270.51 which packs some serious SLI love according to the release notes.

But in any case even at best 3rd card IMHO hardly justifies price premium, added power consumption etc for the performance it adds, it's more of a e-peen booster than anything else.
post #17 of 149
Quote:
Originally Posted by decimate View Post
AMD needs to work on the design for their GPU coolers, though...Middle card at 99* C...
Look at the Pic do you really think any good air is getting to the middle or top cards?

The Middle card is pulling heat from the bottom card's back, and is getting radiant heat from the top card, furthering the heat up.

The cards are likely no meant to be run like that, or at least that was not the primary concern in design.
post #18 of 149
NICE! go AMD!
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post #19 of 149
Quote:
Originally Posted by hli53194 View Post
How are these cards supposed to get any airflow?
6990+6970 Problem solved
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post #20 of 149
Quote:
Originally Posted by Kevlo View Post
Look at the Pic do you really think any good air is getting to the middle or top cards?

The Middle card is pulling heat from the bottom card's back, and is getting radiant heat from the top card, furthering the heat up.

The cards are likely no meant to be run like that, or at least that was not the primary concern in design.
"Yeah, these cards CAN run in tri-Fire, but they're NOT MEANT to be." Nice one, AMD.

Honestly, it's not even that hard to get air to the middle GPU. Just look at how the GTX 580's cooler is curved a bit to allow some air in. That's really all that's needed to keep temps reasonable (without overclocking).

But yeah, if I was to get a tri-Fire or tri-SLI setup, I would definitely make sure to go with a non-ref cooler like the Twin Frozr III.
Edited by decimator - 4/3/11 at 8:34am
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