overclocking cards in Crossfire mode

footman · 18 May 2006 at 14:54

In the brief 20 minutes I had a crossfire setup yesterday before my motherboard died I noticed in catalyst Control Centre that only the Master card was seen.

If I wanted to overclock both cards would I have to install firstly the single "slave" card and clock that one and then install the Master, enable crossfire and then clock that card?

turbotoaster · 18 May 2006 at 15:04

no you have to use a program called ati tool, download it form here
http://www.techpowerup.com/downloads/259

you can pick which card you want to clock, remember to increase the voltages on each card before you turn the core speeds up, there are threads with give you what voltage to get it to

footman · 18 May 2006 at 15:19

excellent, thanks, is it always necessary to raise the cards voltage?

BigDom · 18 May 2006 at 15:58

footman said:
excellent, thanks, is it always necessary to raise the cards voltage?

No, I've NEVER raised the voltage on my Graphics cards.

turbotoaster · 19 May 2006 at 10:58

BigDom said:
No, I've NEVER raised the voltage on my Graphics cards.

so your gonna run 2 [email protected] when they need 1.4v when running in 3d mode

BigDom · 19 May 2006 at 11:09

turbotoaster said:
so your gonna run 2 [email protected] when they need 1.4v when running in 3d mode

Never overclocked X1900XT's but X1800 and X850 and earlier never touched voltages. You don't say just how high that clock is either.

footman · 21 May 2006 at 00:35

turbotoaster said:
no you have to use a program called ati tool, download it form here
http://www.techpowerup.com/downloads/259

you can pick which card you want to clock, remember to increase the voltages on each card before you turn the core speeds up, there are threads with give you what voltage to get it to

when I run this it tells me the "slave" card is not seen by Windows yet in Device manager its there.