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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 874

post #8731 of 38704
I have 1175mV 24/7 at 1170core and 1700mem on 7950 and my stock voltage is .993V. Its non OC sapphire edition. I'm presuming that OC version has higher stock voltage because its has better cooling and higher stock clocks. I dont get over 70°with my card with custom fan profile.
post #8732 of 38704
I dont know why is it so hard for AMD to increase the limits for CCC? ITs not like increasing clocks will kill the card. Why dont they remove Overdrive all together. It just hinders True Overclocking.
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Ishimura
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post #8733 of 38704
Quote:
Originally Posted by ZealotKi11er View Post

I dont know why is it so hard for AMD to increase the limits for CCC? ITs not like increasing clocks will kill the card. Why dont they remove Overdrive all together. It just hinders True Overclocking.

For me, the problem is that I cannot modify the voltage through OverDrive... They could give us a small margin, like +/- 1mV. When I play I increase the clocks to 1050Mhz with 1.112mV. In OverDrive the best I can do is +50Mhz ( 950Mhz ).

That way, I believe, it could become handy without being too much dangerous.
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post #8734 of 38704
I agree on Overdrive topic.
It should be removed or at least they should gave us some voltage control in CCC.
With AMD overdrive its just too complicated.
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post #8735 of 38704
Overdrive is fine as long as you don't use AB with it...
Seems to me AB is conflicting often with Overdrive.

2 Options :

- use AB and disable overdrive and maybe CCC also just to be sure.
- use Trixx or ASUS GPU Tweak in combination with overdrive and CCC

My feeling is there would be a whole lot less troubles this way...
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post #8736 of 38704
2D Screen Flicker

I notice when I'm click through many windows, change settings in AB ... I get a horizontal flicker on my main s950 monitor.

It's connected via DVI-d to one of the 7970. I also have a dell 24" horizontally to the left.. connected DVI>apple dongle> same GPU mini port

anyone have this flickering business? wondering if it's cable, connector, card or monitor? - feels like cable but they are in pretty solid...

thoughts
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post #8737 of 38704
Its GDDR5 "design" flaw.
I also have it on HD 7950. It happens with two monitor connected to same card when card is changing memory clocks.
Btw. anyone have problem with maus cursor stuttering when i enter the system and changing clocks in AMD overdrive?
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post #8738 of 38704
Good news guys! New version of trixx will support overclocking again with the latest drivers.
Quote:
To overclock the Sapphire HD 7970 OC Edition video card we are using Sapphire's overclocking utility TriXX. We do have to tell you about an issue we encountered using the latest version available at the time from the website. While TriXX detected the video card just fine, it wouldn't allow us to overclock because of an issue with ULPS. For some reason the application told us we needed to disable ULPS in the settings, and reboot else crashing and freezing would occur. Well, the setting was turned off in the settings, and we tried multiple combinations of rebooting and checking the feature on and off but nothing worked.

We contacted Sapphire and Sapphire had to send us an updated version of TriXX, which worked flawlessly. The version they sent us is 4.3.0, which is a much higher version than what is currently available on the website, which is 4.1.0. Sapphire is in the stage of finalizing the software which will be made available to the public, no date is currently known on that release yet.

The sliders are unlocked allowing increased range with speeds on the core up to 1850MHz, on the memory up to 2500MHz, and voltages up to 1.35 Volts.

source
post #8739 of 38704
I have the horizontal screen flicker when changing windows. Should i run my secondary monitor off the second 7970?
post #8740 of 38704
Hello
i have a little problem i changed the bios of my 7970 with bios ASUS for more OC but now in idle mode my GPU work a 925Mhz or at the frequencies that the imposed even if the load 0..

with bios 1 the card have 3 step 300Mhz ->500->>925
with bios 2 now only 925 Mhz

is a problem of driver?rolleyes.gifrolleyes.gif
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