Laptops with Pascal Cards - P5000 16GB 2048 cores Vs GTX-1080 8GB 2560 cores?

JoelLovell

Any thoughts on whether a new laptop using a GTX-1080 with 8GB and 2560 cores (5.9TFlops) stacks up vs the new Quadro P5000 with 16GB and 2048 cores (6.2TFlops)? I realize the larger memory could be very useful, even if slight performance difference isn't that dramatic. I think the pricing will be the main issue, but from what I've read they may not be all that different.

nicstt

now 16GB would be nice

 

JoelLovell

It would be nice to be the first kid on the block to have a 16GB P5000 in a laptop, but I am worried it will make for one heck-of-an expensive laptop. Unfortunately, I need a new laptop now not in a month. The GTX-1080 8GB mobile choices out there are at least $3k as it is, and it seems I might get the same level of rendering performance as my desktop running a maxwell Titan X.

Anyone have any idea how much better the P5000 would be vs the GTX-1080 based on specifications? It can't be 'dramatically' faster can it?

 

oomu

I didn't find any serious study about raw calculation between quadro and gtx. It's way too much expensive to do it ourselves.

16Gb would be a nice addition: it allows your gpu to put a whole complex scene in memory for faster calculations and optimize for speed. But with some optimisations from your part, restrains, careful composition and placement of just enough props and surfaces, you will do great with 8Gb.

From what I could see in previous generation, Quadro will not be better than a same generation GTX for _iray_ rendering. The difference in Tflops advertised is not that big either.

But be aware quadro has some exclusive features for iray: first one being streaming. You can't use the streaming features of iray server with a GTX (but queuing is already great). All details in the nvidia iray server forum. And quadro has even more exclusive features for others kind of computation or graphical work.

To summarize, for just rendering with DAZ, I would go with the GTX. 16Gb would ease your work (you just push whatever crazy stuff you want with no restraint) but 8Gb is already enough memory for incredble scenes or will just need to optimize for memory.

JoelLovell

That is pretty much the conclusion I came to. Now I just have to find the best mobile rig sporting the GTX-1080 that doesn't weigh a ton. I've seen a few interesting ones that are around 7.5 pounds, with 7th gen i7 processors (which is a whole other discussion!) and which support a lot of system memory.

Silver Dolphin

I use a cheap HP laptop for my moblie computing with a A10 AMD/ATI CPU/GPU core and a very resonablly priced Intel X79 DDR3 Xeon desktop system to do Iray with alot of extra cooling around the video cards. On a side note if you do alot of Iray renders get a copy of MSI Afterburner and turn on the fans on your desktop GPU's, Nvidia gaming setups are not designed to be under the render stresses that Iray puts your gaming cards thru. I would strongly recommend not doing Iray on laptop. Laptops are not designed for rendering just casual gaming or VR. Iray puts too much stress on GPU and laptops don't have suffecient cooling to be Iray render platforms. Iray will cook your expensive laptop and you will be out whatever you invested in your laptop.

Kaze

If you want your graphics card for gaming as well, you will want to stay away from the quadros. Quadros are not intended for that. You will be much better off with a Titan. If you want to do only gpu rendering I don't know. Probably doesn't answer your question, but if you are going to spend $3000+ for a graphics card, you might want to at least make sure you know at least this much when weighing the worth of a Quadro.