Custom Resolution Utility (CRU)

[ToastyX]

(02-13-2014 10:58 PM)bossturbo Wrote:  How about the Geforce 8400GS with HDMI out? I tried in another computer with the 8400GS and can't get it either. I also have a Geforce 6800 Ultra I can try with dual DVI outs.

Are my cards just too old? What's the minimum card needed? I may have a GeForce GTX260 lying around somewhere...

Thank you for your help and support!

I'm not sure about the GTX 260. All the other cards are too old.

3840x2160 @ 30 Hz requires a 297 MHz pixel clock. HDMI originally only supported 165 MHz. You need a card that supports HDMI 1.3 at least. The problem is even though HDMI 1.3 is supposed to support up to 340 MHz, most video cards that supposedly support HDMI 1.3 can't handle that much. Only newer video cards have been able to handle 297 MHz reliably over HDMI. I would recommend a Kepler-based card or a 7000-series AMD card minimum.

The patch requires a 400-series card minimum, but you might not need the patch with HDMI if you enable the extension block and import the hdmi-audio.dat file.