AMD/ATI Pixel Clock Patcher

[yasamoka]

(04-14-2014 12:47 PM)lawson67 Wrote:  Hi ToastyX i have run 120hz 24/7 since buying my Qnix some time ago when i have my old Asus GTX660 cards in SLI install...since i have switched to 2x AMD R9 290 cards in crossfire!...However I have noticed something that i have never seen before!.. and that is when take my refresh rate down to 60hz the top GPU which my Duel DVI cable is linked into and feeds the monitor!...The Temps only on this card will drop by 10c...reading 40c at idle on the desktop!...

But then if i take the refresh rate up back up to 120hz the card idles again at around 50c!...BTW both cards are not overclocked but i do have ULPS disabled! so both cards are running even at idle!..Have you heard of this happening before?...10c on top of stock temps seems to be a massive increase!....its a shame that i never tested when i had my my 2x Asus GTX660 cards...however i have only come across this testing something else!...

Anyhow Have your heard of this fairly high temp increase before by simply running a higher refresh rate?...Thanks in advance Toasty.

Yep, happens with me and others. No idea exactly why, but the TMDS transmitters are now working harder to deliver the bandwidth at a 450MHz pixel clock. Not sure what hardware is responsible for the added heat, though.

I run 60Hz on the desktop because of the overclocking side effects, but not idle temps as I fold 24/7 anyways. The top card should stay cooler @ 60Hz though, even at full load.