@fred said:
@paralion Threadripper systems are better for pure multicore performance, I am pretty sure the movie decode task is another thread but itself is not mulit-threaded. If you want AMD look at the ryzen 9 3900x and a high end mother board like the Asock 570x Creator. 9k for beamers is a very low budget, but in general rental would still work out, going for a cheaper lower lumen rehearsal beamer and then switch to the fancy ones a few days before the show.
I just rechecked, as silly as it is, we can use the beamer budget only for buying, not for renting.
IMHO you will need to spend so much time and money creating a good mounting system to hang all 16 beamers in the right spot (there wont be any correction on the beamers so positioning needs to be great as without blending you will get ugly seams no matter what; also short throw beamers that you can get for 500 a piece are not going to be bright or good quality and you wont want to hold onto them - they will also likely not have even square images as is the case with cheap short throw lenses, they have a fish eye effect and they are pretty much never actually square).
https://www.optomaeurope.com/projectorproduct/gt1070xe
These are the ones I have (atm only 4), they are not loud, and bright enough but concerning the squareness, I will probably run into dissapointment when I test out all 4 of them on monday. Last test I did was with only 2 of them, and it was close enough to seamless. (having said that, projector distance from wall was closer than in the real setup and I know 2x2 will be way trickier than 2x1)
With that budget buy the BrightLink Pro 1470Ui beamers that @bonemap suggested and then sell them after the production - you will be well within budget, have a better image, less stress on your machine and in general a lot cheaper setup that is easier to manage and will have a better image (the image splitters to take the 4k image to 4 x HD - I am assuming datapath, are not cheap at all - €1500 a piece).
I got these guys: https://www.amazon.de/gp/product/B0833WTY5V/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
I already have 4 of them and from what I saw so far, they do a pretty decent job.
But yeah, If I see the optomas look absolutely terrible, I'll consider switching to the Brightlink. Despite not being happy giving up the resolution. :/
With a seamless rear projection (does the rear projection film come in a size that big?) 4 unblended images to make a single wall are going to look a bit nasty at best.
Maybe I'll have to work with the nastyness... a lot of the stuff is dreamy and abstract.... I might have no choice. The 4k material is all made by me and a collegue. In any case I'll update this thread with my experience, so others can learn from my mistakes!
here my first test with splitter and 2 projectors.