2013 trashcan Mac Pro internal gpu issues with egpu
 
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PiccoloFilms
(@piccolofilms)
New Member
Joined: 5 days ago
 

Hi,

I’ve been having intermittent issues with a nMP 2013 which appear to be related to the graphics cards. I’m running an egpu with Nvidia GTX 980 TI in Akitio TB box, which has been running fine for around 4 years. The issue seems to be with the internal gpus which are the AMD D300s. I’ve had an apple repair specialist look over it and that’s their opinion. Short of finding another nMP trashcan I could salvage some gpus from there doesn’t appear to be an option aside from spending $1,200- $1,500 on a replacement Apple gpu D300. Or cutting my losses and create a new setup. Currently using a 2017 macbook pro to run the system but there’s a lot of daisy-chaining the TB units and running off a clone drive via external USB. 
 
My question is whether you can run the Mac Pro on the egpu exclusively and bypass the internal gpus? It’s the egpu that does all the work processing Davinci Resolve and the monitors. Or is it possible to run off only one of the internal gpus? (I am presuming that only one of the D300 is giving trouble)
 
Any advice much appreciated, and thanks to this forum and all those who contribute to egpu.io to keep graphics options alive.
 
Thanks,
Ray

 

2013 Mac Pro (D300 x2), 10 core E5 2680v2, NVIDIA GTX 980 Ti SC 6GB ACX 2.0, High Sierra


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Jörg Henninges
(@jorg_henninges)
Active Member
Joined: 2 months ago
 

good question...what i can say is, the A+B cards are different. while card A is holding the connection to the HDMI and TB ports to display something, card B is holding the SSD as well, so if you loose the "wrong" card, means you cant boot the mac pro with the internal drive. while driving macOS, one card is always in idle and just kick in, when there is a need to do so. 
i was looking before for an "upgrade" to a dual d700 but when i see the prices in the bay...until i found a used 6,1 for a reasonable price with d700 and really cheaper then the cards alone, but i decide to go the egpu way.

Mac Pro6,1 - E5-2667v2 - Dual D300 + Razer Core X'ed Vega64

 
2013 Mac Pro (D300 x2) [3rd,8C,E] + RX Vega 64 @ 16Gbps-TB2>TB3 (Razer Core X ) + macOS 10.14.6 [build link]  


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PiccoloFilms
(@piccolofilms)
New Member
Joined: 5 days ago
 
Thanks Jorg, those cards are ridiculously expensive considering the age of machine and lack of backup. I've been surprised at how little the techs really know about the 6.1, it's forums like this where all the helpful info is. I'm looking out for a used 6.1 and you're right, it can be cheaper than buying the cards. The egpu way is much better, especially with software like Davinci Resolve that works best from a single gpu. I get the MP back tomorrow and may try swapping the D300 cards around and bypass the faulty one.

 

2013 Mac Pro (D300 x2), 10 core E5 2680v2, NVIDIA GTX 980 Ti SC 6GB ACX 2.0, High Sierra


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