AMD/ATI Pixel Clock Patcher

[lawson67]

(04-16-2014 08:09 PM)ToastyX Wrote:  

(04-15-2014 05:34 PM)lawson67 Wrote:  Edit: According to HWiNFO the memory does indeed down clock at idle without the need for setting "LCD Standard"!...I am using my optimized timings right now it is only ticking over at 300mhz if i run a benchmark it shoots up to 1350mhz and once back on the desktop drops back down to around 300mhz again so i am guessing its what yasamoka says maybe the TMDS transmitters are now working harder to deliver the bandwidth at a 450MHz pixel clock?...But one thing is for sure the memory does down clock without the need to use "LCD Standard"

Unless something changed with the R9 290 cards, I don't know how that's possible. 5 lines of vertical blanking (1445 total) doesn't give enough time to change the memory clock without corrupting the screen. Even NVIDIA cards won't clock down if the vertical blanking/total is that low.

2560x1440 @ 120 Hz with "LCD standard" vertical blanking/total requires a higher pixel clock that might not work with your monitor. Try 110 Hz with "LCD standard" to see if that affects the temperature.

Yes you are quite correct toasty i was looking at HWiFO while in 60hz mode and not in 120hz mode and thought that the memory clock had ramped down at 120hz...I was wrong and apologize!...the memory clock does indeed stay ramped up even on the desktop at 120hz!...Infact my R9 290 draws an extra 60 watts of power to push up the pixel clock to 459mhz and to feed 4gb of DDR 5 ram running at 1350mhz just sat on the desktop doing nothing!...Also i can not run 120hz using LCD Standard timings so i have set up presets in CCC using hot keys to flick from one refresh rate to another!...So i will always flick over to 60hz on the desktop and over to 120hz while gaming!...Thanks again ToastyX for your great patches and CRU and for supporting this community!