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I had even considered water cooling the Titans with an external fully-contained radiator loop. My only concern was being able to fit the dual bridge that sends water from one GPU to the next, as there's virtually no clearance between the back of the Slot 1 card and the compartment wall.

riggles wrote:I had even considered water cooling the Titans with an external fully-contained radiator loop. My only concern was being able to fit the dual bridge that sends water from one GPU to the next, as there's virtually no clearance between the back of the Slot 1 card and the compartment wall.

I've fallen down the rabbit hole and am now thinking about an open external air cooled chassis and moving that out of the office out of ear shot as the noise is already getting on my nerves. Would need something to accomodate two current cards with air cooling plus room to grow (2 or three more maybe).

Question is how does that connect to the Mac? If it was thunderbolt that would be doable, but these have to be connected with some form of ribbon cable back to the PCI slots, yes? That's limits distance I guess.

sdanaher wrote:Titan X arrived today. I'm officially amazed. Threw it in the Mac with the 980 to have dual GPU power. Was a bit nervy but it started up fine, no issues. Desktop, done.

I'm getting very excited to use Cinema 4D for abstract 3d renders. I currently render at 3k-4k for medium print jobs, but I would love to do some 20"x30" prints at 6000x9000px and not have it take up my whole weekend rendering on the CPU. Here's what I've been doing with the Physical render with six cores on my Mac Pro, http://artblog.jeffjag.com

So right now, I'm just sitting around geeking out on how much I could do with the Octane Render. I've seen so many cool renders from abstract artists like Beeple and RawAndRendered who both use Octane ... alas... I have the late 2013 Mac Pro with AMD fire pro graphics. Its a sweet dual GPU setup with 3GB per card, but it does nothing for me until Octane 3 comes out because Apple picked AMD for their graphics. The ONLY knock I have against this system is the non-nVidia graphics. Otherwise it's so glorious.

If I were able to add an nVidia card to my system with one of the Other World Computing PCI-E Expansion boxes http://eshop.macsales.com/shop/Thunderb ... y_Helios_2, I could get started now, and when Octane 3 comes out, I could use all three/four GPU's. But, I'm surprised to read you installed a Titan X in a Mac. I always thought you had to buy one of the older quadro/professional cards with approved nVidia mac drivers to install a new video card in a Mac. Please tell me how you did this. Do you have the older silver aluminum mac pro, or the new one (late 2013) with the cylinder design, and add the card with the aforementioned thunderbolt expansion PCI-E bay?

sdanaher wrote:The flexibility is impressive. I can render a final on the Titan say, then open another instance of Cinama 4D, set Octane to use the 980 and not the Titan and continue working while the titan is rendering a massive print res job. Perhaps some patch renders or special passes or a totally different job.

I'm still relatively new to the Mac OS, so how do you open another instance of Cinema 4D? Are you referring to just having more than one project open at a time, or do you do something different to open multiple instances? If you can show me how to do this, I'd love to know. I can follow complex instructions.

I hope you read this, I'm not a typical forum poster kind of guy... but I think I'm going to get into this forum because this renderer has me so excited I can't stop thinking about how I can get it running on my computer for the lowest cost possible without having to invest in a whole new windows PC... which is not my favorite kind of thing.

-jeffjag

You can open multiple instances of c4d if you have multiple copies of the app installed (eg R15 and R16). It also seems to work if you simply duplicate the Cinema4D.app inside the same Maxon folder.

I have a MP 5.1 12 Core (cheese grater). you need an external PSU to power the cards as the MP can't supply enough power. Installation is plug and play. They do get hot though.