Noob Mac Pro 5,1 / NVIDIA GTX 680 / Mojave Question

[leroyyy]

Hi guys,

I'm not particularly good at the Mac hardware side of things, so forgive what might seem like some noob questions.

I have a Mac Pro 5,1 and like many people here, upgraded the stock GPU to GTX 680 so I could upgrade to Mojave. I bought a Windows version of the GPU and flashed it to OSX and it appears to be working fine on the face of things. Shows nicely on About This Mac, achieves boot screens etc.

Graphics: NVIDIA GeForce GTX 680 2048 MB​

Problem is, I have noticed a significant degradation in performance - particularly when using graphics programmes - e.g. Photoshop, Indesign etc. There are often rendering errors and it just appears, well, slower.

Also I notice Indesign appears to be rendering from the CPU now and I can't do things like run a GPU speed test.

Could you guys help me:

1. Is this likely expected? Or am I just imagining it?
2. Is this because there are no native Nvidia Web Drivers for Mojave? I.e. why Indesign doesn't like the card...
3. Do you think my flash from Windows > Mac was a good idea? Or was it a better idea to get a native Mac card?
4. Any workarounds?

Thanks,

 

[rudo.ba]

Hello, i use flashed Gainward GTX 680 2 GB (one that looks like reference gtx 680) in 5,1 (one x5677, 32 GB RAM, SSD in standard SATA 2 bay + 3 HDDs), Mojave, with no problems, but:

- two displays, but none of them hi-dpi, so no "GPU Performance" in InDesign (not active with standard displays only, only CPU rendering). Also this functionality is still experimental in InDesign, on Adobe forums often recommended to turn off in case of problems (artifacts), there is still no "GPU Performance" in Windows InDesign version

- no problems in Photoshop (i use "Normal" setting in "GPU Performance", no problems with big files like 2-3 GB PSD/PSBs with many layers and smartobjects) and Illustrator

Be sure to update both Adobe CC and Mojave to latest versions.
SSD and sufficient RAM is a must...

Also try without hi-dpi display and please report the result (good to know if buying "retina" display is a good idea or not with this GPU).

Have you rendering errors outside of Adobe CC apps too?

 

[bsbeamer]

You'd likely have better results with an RX580 for Adobe use in Mojave, or downgrade OS to High Sierra. The 2GB VRAM limit is terrible for Adobe CC 2019 applications are BARELY meets their minimum specs. Also make sure you are using authentic Adobe applications, latest versions, the system drive is an SSD (not an HDD) and media/scratch drive is not on the same SSD as system drive.