4870x2 CCC Overdrive Voltage

gruntled · Dec 20, 2008, 05:01 PM

I'm running 8.11 with Overdrive unlocked so I can control the fan speed and am wanting to overclock the gpu's tiny bit (have a HIS 4870x2).

I was wondering, since Overdrive doesn't have a gpu voltage option if you use the CCC overdrive to overclock the gpu does it also increase the core voltages proportionally?

All I want to do is overclock it a bit more on stock voltages (see if it can run 780 on stock), if it increases voltages with the increased frequency in CCC overdrive then I think I might leave it alone.

Thanks for reading.

Jejking · Dec 22, 2008, 12:45 PM

CCC won't do that. GPU voltage is something which is decided on the productiontables and one big factor in demolishing a card, especially if the cooling solution isn't good enough. What do you expect to happen with one billion transistors on 55 nanometers?

To adjust voltage you should try ATi Tray Tools, works fine with me (went from 750/2100 @ 1.08v to 810/2150 @ 1.16v). There is a limit of software voltmodding, if you really really REALLY need to push it further you should mod the hardware to add extra juice.

gruntled · Dec 26, 2008, 07:33 AM

Oh okay, thanks Jejking.

I don't really want to up my voltage on the x2 card, it's already running really hot on 70% fan speed (68C+ under load).

I just wanted to know if I increased clock speed in CCC would it increase the voltage to try and get it stable but you said it doesn't.

I'll try to overclock it abit and see if it runs stable still without artifacts, thanks again

Dec 20, 2008, 05:01 PM	#1
gruntled DriverHeaven Junior Member Join Date: Dec 2008 Location: Sydney Posts: 24 Rep Power: 0 System Specs	4870x2 CCC Overdrive Voltage I'm running 8.11 with Overdrive unlocked so I can control the fan speed and am wanting to overclock the gpu's tiny bit (have a HIS 4870x2). I was wondering, since Overdrive doesn't have a gpu voltage option if you use the CCC overdrive to overclock the gpu does it also increase the core voltages proportionally? All I want to do is overclock it a bit more on stock voltages (see if it can run 780 on stock), if it increases voltages with the increased frequency in CCC overdrive then I think I might leave it alone. Thanks for reading.

Dec 22, 2008, 12:45 PM	#2
Jejking HardwareHeaven Senior Member Join Date: Mar 2005 Location: Europe Posts: 582 Rep Power: 0	Re: 4870x2 CCC Overdrive Voltage CCC won't do that. GPU voltage is something which is decided on the productiontables and one big factor in demolishing a card, especially if the cooling solution isn't good enough. What do you expect to happen with one billion transistors on 55 nanometers? To adjust voltage you should try ATi Tray Tools, works fine with me (went from 750/2100 @ 1.08v to 810/2150 @ 1.16v). There is a limit of software voltmodding, if you really really REALLY need to push it further you should mod the hardware to add extra juice. __________________ Strike back with Team MAD against disease, it's worth the try

Dec 26, 2008, 07:33 AM	Thread Starter #3
gruntled DriverHeaven Junior Member Join Date: Dec 2008 Location: Sydney Posts: 24 Rep Power: 0 System Specs	Re: 4870x2 CCC Overdrive Voltage Oh okay, thanks Jejking. I don't really want to up my voltage on the x2 card, it's already running really hot on 70% fan speed (68C+ under load). I just wanted to know if I increased clock speed in CCC would it increase the voltage to try and get it stable but you said it doesn't. I'll try to overclock it abit and see if it runs stable still without artifacts, thanks again