I wanted an inexpensive way for my 2010 Mac Pro with original stock Radeon HD 5770 video cards to drive a 4K TV as a computer monitor. I'd read conflicting reports about whether it would output 3840 x 2160 4K video, or not. For the benefit of anyone else interested in doing it, I'm posting my results here that it does.
I'm not interested in playing video games, just in using a 40' Samsung 4K TV as a monitor for CAD work and viewing some 4K video. The HD 5770 will output 3840 x 2160 at 24, 25, or 30 Hz with excellent results. It will not output 4K at 60 Hz.
All that's required is a $30 (perhaps less) ACTIVE Mini Display Port to HDMI converter, and possibly depending on your monitor or converter, SwitchResX, which can be downloaded for free unless you want to pay for some of its additional features.
You must use an ACTIVE converter. A passive converter will NOT work. It can be tricky distinguishing an ACTIVE converter from a passive converter, because some passive converters say they support 4K (they do, but not from an HD 5770 video card), and some ACTIVE converters are not marketed as ACTIVE. I used a Kanex KIADAPT4KW, http://www.kanex.com/mdphd4k-adapter, which accepts DisplayPort 1.2 and outputs HDMI 1.4b compatible 297 MHz pixel rate signals.
The Samsung monitor I used showed up in the Display Preferences (and About This Mac) as a native 4096 x 2160 monitor, when in fact it is 3840 x 2160 TV/monitor. I suspect that was because of an EDID problem that could have been in the monitor or the converter. Ms intercom systems install manual. In any event, it did not work correctly when selecting the Native setting or 4096 x 2160 in the Display Preferences. But SwitchResX can be used to easily select the correct 3840 x 2160 output at either 24, 25, or 30 Hz (or 1080p when you don't want the 4K output), and it will default to that setting each time the Mac Pro is booted up.
The results were excellent on CAD and 4K video. I hope this is helpful information for someone else. It certainly would have helped me earlier.
I'm not interested in playing video games, just in using a 40' Samsung 4K TV as a monitor for CAD work and viewing some 4K video. The HD 5770 will output 3840 x 2160 at 24, 25, or 30 Hz with excellent results. It will not output 4K at 60 Hz.
All that's required is a $30 (perhaps less) ACTIVE Mini Display Port to HDMI converter, and possibly depending on your monitor or converter, SwitchResX, which can be downloaded for free unless you want to pay for some of its additional features.
You must use an ACTIVE converter. A passive converter will NOT work. It can be tricky distinguishing an ACTIVE converter from a passive converter, because some passive converters say they support 4K (they do, but not from an HD 5770 video card), and some ACTIVE converters are not marketed as ACTIVE. I used a Kanex KIADAPT4KW, http://www.kanex.com/mdphd4k-adapter, which accepts DisplayPort 1.2 and outputs HDMI 1.4b compatible 297 MHz pixel rate signals.
The Samsung monitor I used showed up in the Display Preferences (and About This Mac) as a native 4096 x 2160 monitor, when in fact it is 3840 x 2160 TV/monitor. I suspect that was because of an EDID problem that could have been in the monitor or the converter. Ms intercom systems install manual. In any event, it did not work correctly when selecting the Native setting or 4096 x 2160 in the Display Preferences. But SwitchResX can be used to easily select the correct 3840 x 2160 output at either 24, 25, or 30 Hz (or 1080p when you don't want the 4K output), and it will default to that setting each time the Mac Pro is booted up.
The results were excellent on CAD and 4K video. I hope this is helpful information for someone else. It certainly would have helped me earlier.
![5770 5770](https://i.ytimg.com/vi/tZjoMzopFWo/maxresdefault.jpg)
Ati Radeon Hd 5770 Mac Pro Driver For Mac Download
The Radeon HD 5770 Mac Edition was a graphics card by ATI, launched in July 2010. Built on the 40 nm process, and based on the Juniper graphics processor, in its Juniper XT variant, the card supports DirectX 11.2. The Juniper graphics processor is an average sized chip with a die area of 166 mm² and 1,040 million transistors. ATI Radeon HD 5870, offered as an upgrade kit The Radeon HD 5870 card requires Mac OS X 10.6.4 or later and the use of both auxiliary power connections. Mac Pro (Early 2008). ATI Radeon HD 5770 Mac Pro Install Guide - Duration: 8:40. Revinriley 34,637 views. Unboxing Six-Core 3.33GHz Mac Pro (Mid 2012) - 64bit Workstation - Duration: 6:20.