How to: 5770 to a 4K TV over HDMI

[prvt.donut]

So I have finally gotten around to getting a Mac Pro.

Currently as it stands, it has a 5770 GPU and all I have at the moment for a display is a 49" Sony 4K TV.

Tomorrow I will be attempting to connect it up and get it running, but before I start buying cables and adapters, I want to verify which I need to get.

From my initial searches on the matter, there seems to be 1 very vocal owner who has done this and used a mini display port (MP) to HDMI 1.4 cable (TV).

Is that all I need?

Of course I will be upgrading the GPU, but as the current crop are over 1 year old, I am thinking to wait to see what goodies are bound to be released soon.

 

[Fl0r!an]

4K@30Hz should work on DP, so I guess you'll need an active DP to HDMI 1.4 adapter.

 

[prvt.donut]

4K@30Hz should work on DP, so I guess you'll need an active DP to HDMI 1.4 adapter.

Are you sure the 5770 can display it?

If so then please point me at an active adapter that is known to work. I tried a Best Buy own brand one and returned it back the next day.

 

[bax2003]

4K@30Hz should work on DP, so I guess you'll need an active DP to HDMI 1.4 adapter.

Isn´t 2560x1600 the highest digital resolution from HD5770/5870 cards ?

 

[Fl0r!an]

Yes, that's why you'll be limited to 30Hz (2560x1600@60Hz uses pretty much the same bandwidth as UHD@30Hz). Depending on your setup you might need SwitchResX to force the correct resolution.

Some positive reports:
http://arstechnica.com/civis/viewtopic.php?f=19&t=1296845
https://discussions.apple.com/thread/5269743?start=0&tstart=0

 

[prvt.donut]

Perfect! Ordered and hopefully this will tide me over until Nvidia releases their Pascal GPUs. There is no way I am buying a new card now knowing that soon there will be a big leap in performance and the current cards are well over a year old, more like 1.5 years.

 

[SoyCapitanSoyCapitan]

Perfect! Ordered and hopefully this will tide me over until Nvidia releases their Pascal GPUs. There is no way I am buying a new card now knowing that soon there will be a big leap in performance and the current cards are well over a year old, more like 1.5 years.

Don't get too optimistic about Pascal in the cMP. The current Nvidia web drivers don't have any native Maxwell optimisations and only enable the 9 series cards through UDA backwards compatibility and by ignoring the hardware check. It's only a guess that Pascal will do the same. Nvidia only has a few people working part time on the Mac drivers and had to hire an extra person in the summer to code for Metal. If Apple continues to snub Nvidia they'll probably shut down Mac driver development as they don't officially need to support any post-Kepler or non-Quadro cards.

 

[prvt.donut]

Ok, well I will wait and see. I got the adapter today, now running at 4K on the 5770. It is a bit flickery/glitchy. But full 4k and it passes audio. So happy for now.

Update: the visual glitches and audio pops and clicks continue with my rMBP, so I think the adapter might be bad. Requested Amazon for a replacement.

 

[DearthnVader]

Don't get too optimistic about Pascal in the cMP. The current Nvidia web drivers don't have any native Maxwell optimisations and only enable the 9 series cards through UDA backwards compatibility and by ignoring the hardware check. It's only a guess that Pascal will do the same. Nvidia only has a few people working part time on the Mac drivers and had to hire an extra person in the summer to code for Metal. If Apple continues to snub Nvidia they'll probably shut down Mac driver development as they don't officially need to support any post-Kepler or non-Quadro cards.

^This^

 

[prvt.donut]

Thanks for the Pascal info. i assumed that new GPUs would be supported as they are using some variations of them in the iMacs and notebooks. Maybe I should just get a 980ti and be done with it.

As for the Kanex display port-HDMI adapter, the replacement arrived from Amazon and I have changed the picture setting on the TV and everything is beautiful. Now I need to get the 49" TV on a desk! It is essentially like having 4 25" 1080p displays in one. It is fabulous.