Mac + eGPU

Mon Dec 22, 2014 2:39 am

I just read in this thread that claims OSX has a limit of 3 GPUs in an external PCI box. Can anyone here verify if this is true? I only have 2 cards at the moment but was planning to upgrade to another 2 more.

http://render.otoy.com/forum/viewtopic.php?f=30&t=43761

Thanks in advance!

Sun Dec 28, 2014 11:28 pm

Thanks Jose

I have a Mac Pro Desktop (Trash bin model running with a titan Z)

I have a 1200 Watt PSU and I plugged the titan right into the AKITO PCI slot without any extra molex's it runs like a charm.

Could be that it is a light model load and I have not yet got it to the point where it starts to heat up a lot etc that it is doing OK. So I may need one but that is unusual is it not??

Anyway many thanks for your detailed help. You have made my home life a lot simpler. THANKS

Peter

Mon Dec 29, 2014 1:52 am

p3taoctane wrote:Thanks Jose

I have a Mac Pro Desktop (Trash bin model running with a titan Z)

I have a 1200 Watt PSU and I plugged the titan right into the AKITO PCI slot without any extra molex's it runs like a charm.

Could be that it is a light model load and I have not yet got it to the point where it starts to heat up a lot etc that it is doing OK. So I may need one but that is unusual is it not??

Anyway many thanks for your detailed help. You have made my home life a lot simpler. THANKS

Peter

Congrats on the setup! It sounds like a winner. Is the Titan Z loading as 2 cards with the driver, does it list them as both "Titan Z" in the System Report? I'm still trying to find out why my Titan Z setup wasn't working. It could just be that the Mac Pro T-Can doesn't need the molex support but that a MBPr does. I just got a couple molexs and ordered a new Titan Black. Hoping to run a Titan Black + Regular Titan on my MBPr. Fingers crossed!

Mon Dec 29, 2014 5:20 am

My typo I am afraid... wishful thinking perhaps :>)
Jus a plain single Titan.

But I plan on trying a Z in the New Year
I'll let you know how it goes

Peter

Mon Dec 29, 2014 6:27 am

Got ya. My guess is you will need one of those powered risers Jose links to above to run the Titan Z. The ones with less wires have not worked for me. Single cards run great with no riser though.

Mon Dec 29, 2014 2:04 pm

Hey guys - anyone seen as thorough a walk through as this for a Win 8 laptop? No Thunderbolt

Mon Dec 29, 2014 2:37 pm

-rb- wrote:Hey guys - anyone seen as thorough a walk through as this for a Win 8 laptop? No Thunderbolt

what connections Your laptop has? Can You hook mPCIe or Express card? I mean do You have any of those ports available?

Mon Dec 29, 2014 3:07 pm

Nope...I picked up an MSI GS70 for cheap so pretty much stuck on USB 3.0...

- Rich

Mon Dec 29, 2014 3:15 pm

I'm guessing I should just bump around on Tech Inferno, just wondering if anyone had a similar guide for 3.0

- Rich

Wed Dec 31, 2014 8:14 am

-rb- wrote:I'm guessing I should just bump around on Tech Inferno, just wondering if anyone had a similar guide for 3.0

- Rich

Yeah, that's pretty much the spot. I have been curious about USB 3.0 support as well and pretty sure it's not doable but don't quote me on that. Thunderbolt is unique in how it ports directly to PCIe or something like that.

Tech Inferno is definitely the spot. Give this thread a shout with whatever you find out. It'd be nice to keep a convo going on the Octane forums about eGPUs.