SLI 780 or Titan

Tue Jul 16, 2013 10:00 pm

All in the question...
What is the best? I don't speak money (It's not me to pay

).

Tue Jul 16, 2013 11:06 pm

I get what you mean for the two 780's (SLI) but just to make sure, SLI is not necessary for octane, and should be turned off.

That out of the way, for speed 2x780's will be quicker than a single titan. For VRAM a titan is better.
The titan will give you a 6GB scene size, the 780's will only give 3GB.

Thanks
Chris.

Wed Jul 17, 2013 1:07 am

Yup, if cost isn't an issue, Titan all the way. You will need that extra Vram one day.

Wed Jul 17, 2013 4:24 am

Two titan's will be great =)

Wed Jul 17, 2013 5:53 am

Ok,
I will see if my scenes must have lots of memory...
Thanks.

Wed Jul 17, 2013 7:24 am

For me I'll go with 2 x 780GTX even I have 3x Titan. None of my current scenes exceed 2.5GB. Perhaps one day I will need these 6GB ! I have my Titan before the release of 780GTX, but no regrets.

Wed Jul 17, 2013 8:59 am

I think it depends a lot on what kind of thing you intend to do with it. I've seen a lot of architectural stuff that is relatively low poly, and fairly detailed images, that are small Vram wise. On the other hand, I have a 1.5 million poly space ship, with a lot of 4K textures on it, that barely fitted on my 2Gig 680. Then I wanted to render it in a city that had at least the same again. If money is no object, why would you not get the best you can, and as far as I am aware, that's Titan.

Wed Jul 17, 2013 1:11 pm

And what happened to my 590GTX, whatever the new graphics card?
It's better I keep it or not?

Wed Jul 17, 2013 8:00 pm

not sure I understand this, I've been looking at other post regarding SLI

If SLI should be turned off, Octane will still use multiple GPU correct?
What is issue with SLI turned on?

Wed Jul 17, 2013 8:59 pm

Hi Exotik78,

I would recommend to keep the GTX590... it is still the fastest card available, when it comes to PCI slot usage... because it has 2 GPUS on one card, that are together faster than or at least as fast as one Titan!
Sure it eats up more energy and you only have 1.5 GB VRAM on them, but if your scene fits in, why don`t use it??
NVIDIA seems not planning to release a TITAN with dual GPU, so in terms of performance the GTX590 is still future proof, when you don`t need the huge VRAM.

See this performance comparison, has been posted already several time in the forum: (GTX590 is as fast as 2x GTX580, at least when a little overclocked)
http://www.tomshardware.com/reviews/gef ... 16-26.html

Greetings,
ChrisVis