So I’m thinking about upgrading my 3x GTX 580 setup and right now leaning towards 2 or 3 GTX 1070s, but I’m just wondering where there’s potentially some optimisation in blender/CUDA that may come along soon and make the 1080, at nearly double the price of the 1070 seem like a better value for money proposition, considering it has an extra 25% CUDA cores and right now doesn’t seem to be doing a massive amount better in rendering benchmarks in Blender.
What does everyone reckon?
I have already made my decision even before the GTX 1070 came out: https://blenderartists.org/forum/showthread.php?398396-Nvidia-announced-GTX-1080-and-GTX-1070&p=3059678&viewfull=1#post3059678
Now I have two of those from different producers, they are worth every $.
Performance + low power consumption + 8 GB DDR5 + middle price range.
I would buy a GTX 1080 only if it is used and has appropriate discount, I have seen some on Ebay already but don’t feel the need yet since I am overpowered for now.
Btw. What is your result (you can use your best settings) for the BMW27.blend scene at default sample count?
Yep I’ve just been reading up and it seems like the best option, apart from maybe when the 1080 Ti comes out which is rumoured to be in January, and might push the price of 1070/1080s down a bit…
Are we talking MSI, Asus? MSI doesnt have cuda cores, Asus does. But i am not an expert so i cant give you any advice.
Erm… Surely all GTX 1070s have CUDA cores…
Also, what I don’t get is that a GTX580 has 512 CUDA cores, and a GTX 1070 has 1920 CUDA cores, yet 3 GTX 580s (i1536 CUDA cores) is faster than 2 x GTX 1070s? (3840CUDA cores)
A CUDA core is not a fixed-performance unit. There are different generations with different architectures and performances. Think of it as CPU cores. Does a single core of modern i7 processor equal a single core of Pentium 100? No. The capability of a single CUDA core changed in 6xx series and is underpowered compared to 5xx. There are more of them, but they are slower.
Regarding this Asus has, MSI doesnt, this is just BS. Different GPU vendors get the same chips from nVidia, they have no power to remove cores or add them. Maybe only disable, but I can’t think of a reason to do that.
What’s the story with the 1080 and Cycles? Last time I checked, Cycles didn’t support this card (yet). Has this been addressed?