external PSU for graphics card - Mac Pro 5,1 - advice please

[Itconnects]

See the specs from Avid/ProTools. You're going to need an older generation card and a GPU with less power requirement to get around the issues. The reason RX 560 is recommended is because it uses BUS POWER ONLY for the majority of the variations.

Every single GTX 680 I've seen (including the official Mac Edition) still requires power from system via dual mini 6-pin power sources. Once those are consumed, there's not enough "left" for the HDX.

The source for "other graphics cards have been shown to cause errors" is 100% due to underpowered GPU/PCIe issues when used in combination with HDX. The only way you can get around that is with an external PSU.

The main reason for all of this - the HDX card (for several generations) is extremely power hungry. It really works better in an external chassis whenever possible with it's own power source.

http://avid.force.com/pkb/articles/compatibility/Pro-Tools-System-Requirements

View attachment 897786

GTX 680 or HD7950 vid card and HDX-3 - how do i do power for the cards? - Page 3 - Avid Pro Audio Community

Page 3- GTX 680 or HD7950 vid card and HDX-3 - how do i do power for the cards? Pro Tools HDX & HD Native Systems (Mac)

duc.avid.com

What do you think about this

 

[bsbeamer]

I think you're not listening to the advice being given here and on the AVID forum. It's all saying the same thing - to do what you're asking requires external power -OR- changing your GPU to a version that does not require supplemental power beyond what just the PCIe can provide (like most of the RX560 models) -OR- changing your HDX to a much earlier version that had different power constraints.

Stick with what AVID recommends for AVID systems. They are one of the most finicky vendors when it comes to stuff "working" with their systems.

 

[Itconnects]

I think you're not listening to the advice being given here and on the AVID forum. It's all saying the same thing -

I have no idea what you’re reading, but no it doesn’t say the same thing. The thread you sent me is dated 2013. The thread I sent you is 2017. Consensus in the latest thread is no need for an external pSU. Avid card 50W. Thanks anyways.

 

[bsbeamer]

If you know exactly what you need, why bother posting here with questions? Best of luck.

 

[Itconnects]

If you know exactly what you need, why bother posting here with questions? Best of luck.

Why so hostile? You ignored the latest thread and tried to say they were saying the same things which clearly they’re not. Not even close. No I don’t know exactly which cables I need, that’s why I posted it. If you have no experience with the latest method on the avid forum, just say so. This is a discussion, no?

 

[chrissomos]

If you check eBay there is a component that has an atx connector on one end and a switch on the other just for the purpose of shorting those pins and activiating the power supply. i use for a Vega FE no problems.

 

[MIKX]

bsbeamer wasn't being hostile, many here will vouch for his expertise
regarding Mac Pros.

Google is your friend.