Snow Leopard/Windows 10 and 4k video

[wavesequence]

I'm writing to receive some good advices for a substitute GPU that supports 4k.
At present my old hackintosh based on a X58A-UD3R, i7 950 runs SL 10.6.8 on a separate HD, but there's also a HD where Windows 10 is installed.
I received a 4k monitor as a gift thus my old Sapphire HD5770 seems not able to support higher resolutions than 1080x1920.
Is there a more modern GPU (2GB) that is compatible both with SL and Windows 10?
Thanks in advance
ws

 

[trs96]

Is there a more modern GPU (2GB) that is compatible both with SL and Windows 10?

Yes, but not one that supports 4K on each OS. Snow Leopard came out in 2008, 12 years ago. No one was using 4K monitors back then.

Here's some of the older cards that work with Snow Leopard. None of them can do 4K.

• ATI Radeon X1300
• ATI Mobility Radeon X1600
• ATI Radeon X1600
• ATI Radeon X1900 XT
• ATI Radeon HD 2400 XT
• ATI Radeon HD 2600 PRO
• ATI Radeon HD 2600 XT
• ATI Radeon HD 3870
• NVIDIA GeForce 7300 GT
• NVIDIA GeForce 7600 GT
• NVIDIA Quadro FX 4500

 

[trs96]

One of these 1GB HD6870 cards could give you a 2560 x 1600p resolution if it works with your new monitor.

https://www.newegg.com/sapphire-radeon-hd-6870-100314-3l/p/N82E16814102948

Not sure how or if it works with Windows 10 though.

 

[wavesequence]

Thanks for your prompt reply, trs96.
Perhaps I'm trying to extract blood from a wall...
Anyway, as far as I can see also Sapphire HD5770 is capable to manage 2560x1600p resolution... I can't understand my new Philips 328B6 4k monitor set on 2560x1440 resolution is terribly low quality.
Thus I'm uncertain whether change GPU and "losing" my SL hackintosh or keeping the same HD5700 but donwsizing to 1080x1920 under Windows 10.

 

[wavesequence]

Something strange happens, under Win10. If monitor is connected with a DVI cable, I can obtain just 1920x1080 and, as I said before, a 2560x1440 resolution is terribly low quality.
If I connect the monitor with a HDMI cable, I obtain a 1920x1080 or lower resolutions.
It sounds really strange to me why I can't obtain a 2560x1440 resolution under Windows10.

 

[trs96]

Something strange happens, under Win10. If monitor is connected with a DVI cable, I can obtain just 1920x1080 and, as I said before, a 2560x1440 resolution is terribly low quality.
If I connect the monitor with a HDMI cable, I obtain a 1920x1080 or lower resolutions.
It sounds really strange to me why I can't obtain a 2560x1440 resolution under Windows10.

Are there any windows 10 drivers for your 5770 ? If not that may be why.

 

[wavesequence]

Installed latest I found on AMD website but the maximum resolution I get, with a HDMI cable, is always 1920x1080.
I'll do another attempt with a different DVI Cable, then if I don't obtain any results I give up.

 

[wavesequence]

After having installed latest AMD drivers avaliable for HD5770 and using the DVI cable enclosed with Philips Brilliance 328B6 everything, under Windows, went as expected. Now I got the desired resolution.
Thanks trs96 for having put me on the right track!

 

[wavesequence]

To my amazement, also under SnowLeopard, the 2560x1440 resolution was automatically selected. I can now define myself satisfied.

 

[Jamesbond007]

After having installed latest AMD drivers available for HD5770 and using the DVI cable enclosed with Philips Brilliance 328B6 everything, under Windows, went as expected. Now I got the desired resolution.
Thanks trs96 for having put me on the right track!

Good to see you get it working.

One thing I would like to point out : The reason why your other DVI cable won't give you the desired resolution is probably because it is single link. The DVI cable included with your new monitor should be dual link which supports 2560x1440 resolution.

My new Eizo EV2760, which supports a native resolution of 2560x1440, also won't work with my old single link DVI cables. I had to buy a dual link DVI cable from a local store to use its DVI port with full resolution with a Windows PC. (My main hackintosh is connected to the monitor using a DisplayPort cable.)