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-   -   Is SLI in Linux worth it? (http://www.nvnews.net/vbulletin/showthread.php?t=156234)

OliW 10-19-10 05:59 AM

Is SLI in Linux worth it?
 
I have a GTX260 that I'm fairly happy with. I'm getting to the point where I'm considering an upgrade and I've never tried SLI before. Being a Linux user, I have next-to-zero interest in DX11 capabilities as everything here is OpenGL (or Wine-converted into OpenGL).

So I have a choice. I could spend 220-odd on a replacement card in the 4xx series or wait a while and do something similar with the 5xx series. Of course by then the ATI/AMD drivers might be good enough to consider switching. Or I could or spend 100 and get another GTX260 and put it in SLI with my current one.

Historically, I've noticed that SLI support in Linux is pretty dire. I've seen things that say you get perhaps 1fps improvement, sometimes even performance hits. It doesn't fill me with confidence... But before I say no to it completely, I'd like to know from anybody using SLI in Linux if things have improved and how good performance really is.

To complicate things slightly, I use Twinview and regularly use VDPAU. I'd need to keep doing so after the upgrade so if there are any usage notes on that, let me know please.

Dragoran 10-19-10 07:31 AM

Re: Is SLI in Linux worth it?
 
no

OliW 10-19-10 07:34 AM

Re: Is SLI in Linux worth it?
 
Thanks for the thorough answer.

artem 10-19-10 07:39 AM

Re: Is SLI in Linux worth it?
 
So you actually play Windows games under Wine? Incredible.

I'd go for GTX460 in your case - it's faster and cooler and I've heard that SLI doesn't actually work well under Linux because it's optimized only for few native Linux games like Quake 3.

toddbailey 10-20-10 02:38 PM

Re: Is SLI in Linux worth it?
 
NO .


SLI doesn't really work all that well in windows, in linux it's a complete waste.
Here are a sample of benchmark scores single card 35 fps, 2 sli'd cards 40 fps.

Maybe Ati does multiple cards better but SLI is not worth the added cost and power requirements.

Instead of buying 2 $100 cards buy 1 $200 card. for example...

my next purchase will be for 1 card and one card only

Deanjo 10-21-10 10:20 AM

Re: Is SLI in Linux worth it?
 
Quote:

Originally Posted by toddbailey (Post 2334601)
SLI doesn't really work all that well in windows

If that ain't a bunch of bull.

http://www.tomshardware.com/reviews/...-480,2694.html
http://www.hardocp.com/article/2010/...sfirex_redux/2
http://www.legitreviews.com/article/1364/16/
http://www.techpowerup.com/reviews/N...60_SLI/27.html

artem 10-21-10 11:57 AM

Re: Is SLI in Linux worth it?
 
Really?

At low resolutions games framerate is limited by CPU (and it's already very high) and only at higher resolutions where GPU is required to do more work, SLI really works.

You seem to misread and misunderstand their(=reviewers) conclusions.


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