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Real Mac 5,1 RX 580 Upgrade

Joined
Nov 9, 2020
Messages
1
Motherboard
Mac 5,1
CPU
2 x 2.66 GHz 6-Core Intel Xeon
Graphics
Radeon RX 580 8 GB
Mac
  1. Mac Pro
I upgraded my old GeForce GTX 680 today to Sapphire Pulse Rx 580 8G and I see very little, if any, improvement.
I use Davinci Resolve for editing, some 4k, some less - but the new GPU has not improved my timeline edit at all. In researching this, I'm seeing all sorts of conflicting information on graphics acceleration; needing OpenCore; this and that. I'm currently on Mojave and I'm just looking for advice to see if this GPU can enhance my current editing situation or perhaps I need a different one. Thanks for your help - greatly appreciated.

P.S. - as a side note, since I installed this new GPU, for some reason watching Netflix in browser, won't play in HD. Thought I'd add this in case it offers any insight.
 
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