This can cause some issues with auto GPU switching on some laptops (windows and mac) as well, as Vision will initialize while being bound to the card it sees first.
Now, Vision looks for the first GPU, or the primary, on both mac and windows. This leaves us with the connection itself bottlenecking, Vision aside. Double check that, my math is a little rusty lol. An x16 slot offers 126.03Gbps, if my math is right ((8GTs x lanes) x (128b/130b) = Transfer rate in Gbps where 128b/130b accounts for encoding. While this sounds great on paper, and is DEFINITELY great for storage devices (HDD, SSD, etc) A PCIe 3.0 x8 slot offers 63.01Gbps transfer rates. Thunderbolt 1 has a transfer rate of 10Gbps, T2: 20Gbps, T3:40Gbps. We're talking PCIe x4 slots, shoddy, non-modular PSUs, etc.īut the question of the day is really, how does the external stack up? The problem we run into is the connection first and foremost. Mac Mobos are made by foxconn, and err.not made well. As Daniel aptly pointed out, often a custom built PC will be cheaper, and far outperform the mac (external aside, due to limited GPU options and.limited mobo performance).
First, I'd say overall, not worth the money. I cant comment too much on the internal architecture, but I will add my two cents on external GPUs. That being said, if you're using that card to power other things on your Mac it might be worth it. You're looking at ~ $200 base for the enclosure which is very similar to the cost of a motherboard and CPU for a PC. My recent experience leads me to believe that building a simple PC with a high-end graphics card is less expensive than trying to integrate the external enclosure. My experience with Qt (which is what Vision and Vectorworks are built on) is that it runs very well on Windows, Linux, or Mac so you're probably hardware bound. That was using a Mac Mini 2014 as a test-case which was pretty solid.įor whatever it is worth installing the external hardware in an enclosure was a bit of work and less reliable than I liked. In my tests QLab didn't utilize the external hardware (CoreVideo) and Processing did (OpenGL). It should, however, use the OpenGL hardware. I know for a fact if they're routing through CoreVideo (I don't think they are) the eGPU option via Thunderbolt isn't an option as the MacOS won't use the hardware. I would push for a technical answer from the Vision team.
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