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alulekk

P3D in 4k - What GPU are people using?

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Hi.

Wanted to get a sense of what GPU people are using for P3D in 4k?

 

I feel like I saw that Rob Ainscough is using a Titan Black.

 

I would imagine he'd be using a GTX 980 ...if there were a 6gb or 8gb VRAM option available.

Correct me if I'm wrong, but at 4k resolutions, VRAM limitations become a real issue with the 3 & 4GB GPUs?

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Hi,

 

I am using a 49" LG 4K TV as the main monitor and a 660GTX card with marvellous results (>= 30 fps) at 3850*2160 resolution

 

Jan

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Hi,

 

I am using a 49" LG 4K TV as the main monitor and a 660GTX card with marvellous results (>= 30 fps) at 3850*2160 resolution

 

Jan

 

WOW.

A GTX 660 @ 4k with good FPS?

 

I have to admit - That blows me away

 

Have you tested out OrbX PNW around KSEA with your rig?  (that situation is always a torture test)

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Running a Philips 40" 4K monitor (BDM4065UC) on a GTX780 3Gb - keep AA at x2 and don't go crazy with the settings sliders and its all good!

 

In all situations I noticed roughly 15% - 20% drop in FPS coming up from 2560x1440 res monitor.

 

With respect to the GTX980, this card only has a 256-bit memory bus which causes memory compression and actually hinders ultra high resolutions.

 

If your thinking about going 4K then get a GTX 780 /780 Ti or wait for the full Nvidia Maxwell (GM200) GPUs sometime next year.

 

Whilst P3Dv2 does utilise the power of modern GPU's far more than FSX does, it is still quite heavily CPU bound in most situations. Meaning even at ultra high resolutions you will probable hit your CPU limit before your GPU limit, even with a mid-range graphics card

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With respect to the GTX980, this card only has a 256-bit memory bus which causes memory compression and actually hinders ultra high resolutions.

 

Interesting.

Is this one of the reasons that the 290x is so good at UHD resolutions?  (has a 512 bit bus I believe)

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I run a 55-inch Samsung 4k monitor with a 980/4GB using Rob's settings. I get between 40-60 fps in most circumstances using A2A planes, the Airbus, the Q400, ASN, REX4, and Orbx regions and airports and am very pleased with the image quality. I have no shortage of video memory even though I used to use a 780/6GB card. I see no image degradation from having moved from the 780 to the 980. And with the 980, which has HDMI 2.0, I am not limited to 30 fps. My CPU is a 4790k oc'd to 4.7. I couldn't be happier. 

 

Robert

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Anyone tried 4k sli with 970s? Looking at 4k in the next month and already have a 970.

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Anyone tried 4k sli with 970s? Looking at 4k in the next month and already have a 970.

 

I didn't think we had an official SLI profile from NVIDIA yet, do we?

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I feel like I saw that Rob Ainscough is using a Titan Black.
 
I would imagine he'd be using a GTX 980 ...if there were a 6gb or 8gb VRAM option available.
Correct me if I'm wrong, but at 4k resolutions, VRAM limitations become a real issue with the 3 & 4GB GPUs?

 

Correct, I have exceed 4GB VRAM (I recall 4.6 being my max, but screen shot is a 4.1GB usage) and hence why I'm staying with these Titans -- see here: http://www.robainscough.com/images/4b3ecc341a1223a229265549680acae7.jpg

 

 

 


I didn't think we had an official SLI profile from NVIDIA yet, do we?

 

347.09 beta drivers are out, but they don't have anything for P3D and no mention of P3D in release notes.

 

I have no experience with the 980 but as pointed out it comes with HDMI 2.0 and DX12 accelerated support.

 

Cheers, Rob.

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347.09 beta drivers are out, but they don't have anything for P3D and no mention of P3D in release notes.

 

I'll bet farm tractor simulator was on the list lol - Titan gpu here also 

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I'll bet farm tractor simulator was on the list

 

Two more 3D shooter console ports added to nVidia's list of 20,000+ 3D shooters.  I guess our feedback to nVidia didn't make the Radar ... Goats 1 ... P3D 0.

 

Cheers, Rob.

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Just ordered a Seiki 65" 4K TV from Amazon ($1069 + free shipping). I know this TV can only do 4k at 30Hz, but I'm currently running FFTF=0.01 with 30fps locked plus 4x DSR which is already at 4K resolution. So the Seiki's 30Hz could be a perfect match to my rig.

 

Since my GTX 980 has no problem running 4xDSR, I hope it will deal with 4K TV just fine. With 4K I probably either don't have to run DSR or only need to run it at 1.3x or sth.

 

Size wise, it should also be a nice upgrade from my current 50" plasma. I found that 1080p resolution at 50" screen is barely sufficient so I know that just buying a bigger 1080p TV won't cut it. It has to be 4K to be a real upgrade.

 

I hope that in couple years Oculus Rift's VR display like CV1 or CV2 will have good enough resolution and support from P3D that I won't fly on monitor anymore. I already have Oculus DK2 but it's low resolution is hard to bear for everyday use, plus other software glitches.

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I didn't think we had an official SLI profile from NVIDIA yet, do we?

Yes you are right, no we don't have official support, but I was wondering if anyone has tried. I know some people are using sli and have seen a difference. Just wondered if anyone has tried the newer cards with 4k and sli.

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There has been discussion on Nvidia forums that it is difficult to get full 4:4:4 color at 60Hz video with Samsung and other 4KHDTVs. You would notice this with simple text screens. Has anyone found a combination that works OK so that the 4k tv can be used as a monitor?

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I didn't think we had an official SLI profile from NVIDIA yet, do we?

I'd love to learn what LM has done to garner support from NVIDIA on this--seems odd to me that this hasn't happened already considering the size of LM as a company even though market share for P3D is low.

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I'd love to learn what LM has done to garner support from NVIDIA on this--seems odd to me that this hasn't happened already considering the size of LM as a company even though market share for P3D is low.

 

Doesn't seem odd at all to me.  

 

Has been discussed before, if LM purchased large volumes of nVidia graphics cards I'm sure they would have more pull with nVidia, but they don't.  It's all about sales and feedback.  Would nVidia have a reason to want to partner with LM ... don't know?  LM is a huge company with many projects from space exploration projects to earth mapping projects to military projects ... I suspect however the processing power LM use for other parts of the company are SPARC based or even more exotic hardware ... but most likely not nVidia. 

 

What gets nVidia's attention is Sales volume and feedback ... the two go hand in hand.

 

Cheers, Rob.

 

 

OK so that the 4k tv can be used as a monitor?

 

Yes, it's my daily work monitor and it's extremely more efficient to my work flow ... I can have code windows up (VS 2012), SMSS (SQL Database manager) open viewing my data, specs open (word doc multi-page) without ever having to re-arrange windows or re-size anything.  That alone speeds up my development process and most importantly removes potential for mistakes.

 

30 Hz is perfectly fine for 12-14 hours (at least on my Sony it is) ... no headaches, no flickering, all nice and smooth.

 

Cheers, Rob.

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Doesn't seem odd at all to me.

Cheers, Rob.

Yes, I already mentioned 'despite the low market share...'  

 

My statement was that I'd love to learn what has been done in this regard.  You say it's been discussed before.  Do you know what LM has done towards this end?  Have they attempted to negotiate a customization by NVIDIA driver developers for P3D?  What would would you imagine it would cost LM $$ wise to pay NVIDIA to optimize the driver for P3D?  Were LM a small company with little to invest and a very unknown product future I could understand this, but again LM is big, they seem to want to take P3D into the future, and since they probably spend significant resources addressing things affecting performance it seems this is a very important area to exploit in light of the fact many to most users will be using NV GPUs--especially w/ regard to SLI as you've pointed out in the past--much simpler to SLI 2x-4x versus upgrade the whole box.   If it's simply a matter of a very large sum of $$ to pay for driver optimization this is easy to follow--have you heard this was the issue?  I would imagine the combined salaries of the LM programmers must be very substantial annually.  If LM coughed up $50K to make the driver sing for SLI, it could be very meaningful I would think.  I would imagine you could do some serious optimization as an experienced driver developer for NV w/ that sort of time.   4-6 months of full time effort?  Seems doable.

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It would have to be a lot more than $50,000 to get nVidia's devoted attention.  Money always talks so I guess in theory a substantial sum would get attention but $50,000 isn't going to hack it (not even close).  Large sums of money are never simple matters.

 

Like I said before, DX12 would be the more effective approach, removes nVidia from the equation for the most part and might even remove a need for SLi.

 

No I don't have specific conversations details or email that have gone back and forth between LM and nVidia ... I doubt that information would ever be shared and rightfully so.  Beau has posted publicly they've been in conversations with nVidia.

 

Cheers, Rob.

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If $50K isn't in the ball park which intuitively seems reasonable to me then I've apparently underestimated it.  My fantasy is the driver developer who is very familiar w/ the architecture and controls should be able to optimize performance & capabilities w/ say a half a year's worth of consulting time.  Heck, hire a programmer to do it on the side.  I am truly not familiar w/ what's really involved, so I base the intuition on purchasing custom programming work for our health record database.  For $1000 we've gotten some awesome routines developed.   Tweaking a driver intuitively doesn't seem like rocket science, more trial an error.  But as I say, I don't really have the knowledge about what's involved.

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