AMD/ATI Pixel Clock Patcher

[razner312]

(01-13-2017 01:47 AM)ToastyX Wrote:  

(01-13-2017 01:08 AM)razner312 Wrote:  Hi there, recently upgraded to a 1440p Hannspree monitor (HQ271) and am having some annoying issues with trying to overclock the monitor past 73hz. As the monitor unfortunately doesn't have a display port output, I have it connected with a HDMI 1.4a, connected to my R9 Fury which doesn't support the monitors other output which is is Dual Link DVI. Anyways so far I have tried installing different versions of the AMD Crimson Drivers, patched the drivers using your tool over here, disabled the signing of drivers through windows and finally made different types of custom resolutions using CRU. I honestly don't know whats stopping my PC from recognizing anything more than 73hz, but I do know that HDMI 1.4a has a max pixel clock of 340mhz which does mean that I should be able to overclock the monitor to at least 84hz. Thanks in advance!

AMD cards have a 297 Hz limit with HDMI 1.x, but the patch should get around that. Maybe the patch misses something that affects the Fury, but before going any further, are you sure the monitor can display higher refresh rates without skipping frames? 2560x1440 monitors with multiple inputs usually have scalers that can't handle higher refresh rates correctly. This should be noticeable simply by moving the mouse cursor, or you can use this test with a camera: http://testufo.com/#test=frameskipping

It must be hitting the 297 hz limit then, because 73hz is at a pixel clock of 294mhz and 74hz is 298mhz. I used the frame skipping test already and it went perfectly fine and should do to much higher refresh rates (its a very good panel). So it looks like the patch is missing something, is there anyway manually of doing it then as I am still craving those extra Hz's. On a side note, there was someone on youtube using the same monitor as me and he managed to get his monitor to 100hz so it is reassuring that its capable of that. Thanks again