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Multiple Displays - SLI/CROSSFIRE or Not?

post #1 of 3
Thread Starter 
I'm building a rig as a multipurpose unit - call it an extreme gaming workstation - and have a graphics card question. I am pretty noob when it comes to understanding multiple graphics card & ultra-high res display setups.

If I understand SLI/Crossfire correctly they tie two or more Cards together so the workload of rendering frames is spread across multiple cards for more efficient processing than one card could - i.e. 2x GTX 780 TI in SLI will process drastically faster than 1 could. THE DOWNFALL as I seem to be reading is that all the processing is fed back to the "master" card and only goes out the master card's video outputs.

My application is this: 6 displays mounted for wraparound view (3 wide by two tall) for ultra-high res gaming and for video-wall level of information for my engineering design & photo editing (I am an EXTREME multi-tasker when working).

If I understand SLI correctly, how do I get 6 1080p displays connected to the system and maximize the graphics performance while doing so - most high end graphics cards only have a max of 4 output connectors?

Is ANY setup capable of running max graphics on the top games on this many displays?

This setup would still need to be stable enough to run AutoCAD, Adobe Suite, etc. well like a Quadro would perform and not just be max gaming performance.



Disclaimer: I'm not interested in the difference between 1 high end card vs. 2 mid-level cards in SLI so please don't hijack the thread with those arguments or useless ATI vs. NVIDIA - I don't care!
post #2 of 3
Thread Starter 
So, since posting this, I've seen that DP1.2 can push multiple 1080p displays out through one connector - such as in the HD 7990 with Eyefinity and MST. So I have my answer as to how to push the number of displays I want to run.

Can ANY rig run max or ultra high graphics at this resolution across six displays?
5760x2160

Would two (or even 3 or 4) HD7990 cards or 290X cards be able to run this large a multi-screen solution?
post #3 of 3
Hi Lexus,

Yes, I would say the 7990 can certainly power 5 screens at lower resolutions like 1080p - I would assume 6 too. I've seen it running current gen (well, BF3) games across 5 1080p screens at high settings (not sure if maxed) so I'd feel relatively confident it would be able to stretch to the 6th. You would need to ensure your monitors can properly daisy-chain but it sounds like you're up to speed on that.

Others here may have tried this and can chime in on the level of performance you'd get from a single 7990 but I'd also suspect you wouldn't be able to CF 2 of those without some possibly major issues. 4 GPUs and the laws of diminishing returns, etc.

You may find 2x Titans would be a better option, based on the benches I've read for those in SLI, admittedly only at 1440p single screen.
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