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best way to 4K-enable old MacPros?


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#1
yeh

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Hi all,

 

So my 2006 1,1 MacPro is now rock'n! thanx to the Boot32.efi patch, it's running 10.9.4 very nicely...

 

With:

  • 32GB RAM
  • upgraded Woodcrest CPUs to dual Quads @ 2.26GHz
  • 2 x 10K Raptors (stripe boot) (using the 2 spare SATA ports)
  • 4 x 2TB Seagate SATAs in the 4 stand bays
  • GTX420M (VGA, DVI & HDMI)
  • Silicon Image 2 port eSATA
  • BlackMagic Decklink Extreme 3D

It's a very capable FCX rig for any non-professional (a.k.a I don't earn money from this rig anymore)

 

I just bought a Samsung U28D590D whick is a 4K monitor and has 2 HDMI and 1 DisplayPort.

 

The DisplayPort is plugged into my QuoComputer gaming rig that's using two Titans to drive the 4K monitor.

 

So, I'm wondering how I can use the remaining two HDMI ports on the monitor for the MacPro.

 

I see two possible ways:

 

  1. Buy a new GPU that has dual HDMI or 1 x HDMI and 1 x mDP and use an active mDP --> HDMI adapter. The Samsung U28D590D supports PictureByPicture (PBP), which is 1920px x 2160px resolution, and so I'm wondering if I can find a PC card that can do this. or
  2. Buy a PC GPU that has DP 1.2 capable of running 3840px x 2160px @ 60Hz with Mac OS X 10.9.4

 

I'm not really keen on buying a geniune Mac card to achive this due to the high prices  (plus they "claim" 2006 MacPros aren't supported)

 

Has anyone else got 4K running on their older MacPros? if so, please do share...



#2
PJALM

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i use a sapphire hd7950 mac edition in my 1,1 and a asus 4k display, works perfect.

 

u need the DP to get the 4k, dual HDMI I don't think will work as there is no way in osx to tie the 2 outputs together



#3
OmnipotentIdiot

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i use a sapphire hd7950 mac edition in my 1,1 and a asus 4k display, works perfect.

 

u need the DP to get the 4k, dual HDMI I don't think will work as there is no way in osx to tie the 2 outputs together

whats the DP? sorry,i got a mac pro 1,1 also and i want to upgrade the 5770 to something newer and saw this post. I mainly use my mac for windows 7 and osx for school. If I keep the 5770 as primary video card,whats the fastest video card I can add for my secondary video? Can I run a 780ti in this? maybe a r9290x?



#4
bax2003

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whats the DP? sorry,i got a mac pro 1,1 also and i want to upgrade the 5770 to something newer and saw this post. I mainly use my mac for windows 7 and osx for school. If I keep the 5770 as primary video card,whats the fastest video card I can add for my secondary video? Can I run a 780ti in this? maybe a r9290x?

 

Display Port.



#5
yeh

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It's not possible to "tie together" two HDMI streams on OSX 10.9.4 to form one big screen. Nor is this my intention.

 

All I'm wanting to do is use two GPUs, each with a HDMI and plug them into the Samsung.

 

The Samsung is configured to use its Picture By Picture feature and so OSX will think it's driving two displays – each of 1920 x 2160 resolution.

 

I intend to then, force-enable HiDPI mode on both the displays to remedy smallness of text/icons. I'm still yet to determine if this is possible at 60Hz, but it is possible at 30Hz as I've already achieved this.

 

It appears that I need to use two identical GPUs so that the nVidia drivers initialise both cards. I cannot confirm this just yet as I'm still sourcing another identical GPU, or use a GPU that has either: two mDP ports (with Active HDMI adapters), or two HDMI ports.

 

Given that users with 1,1 and 2,1 MacPro have to upgrade their GPUs if they want to run Mavericks with Tiamo patcher, I'm trying to see if it's possible to factor in 4K as well.







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