impossible to OC second card

[Apolo29]

i have two 5830`s running on an Asus M4A79 deluxe motherboard and win xp

i tried with trixx, amd gpu tool clock and msi afterburner, but with any could oc 2nd card after 875 mhz, can anyone help me?

The first is a 1000 mhz/300 with 310 mhash

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[d.james]

each card has different oc level, you may need to pump the voltage on that 2nd card a little with trixx if possible.

[Apolo29]

The problem is that Trixx don`t recognize 2nd card, just working with 1st.

Cards where running alone i different machines and both worked ok at 1000 mhz, the thing is i don´t know how to oc the second one over 875 mhz now that they are in the same motherboard.

[Litt]

The problem is that Trixx don`t recognize 2nd card, just working with 1st.

Cards where running alone i different machines and both worked ok at 1000 mhz, the thing is i don´t know how to oc the second one over 875 mhz now that they are in the same motherboard.

crossfire them.

[Apolo29]

I put the in cross and i don´t know why just the first one works ( 300 mh ) and can´t make the second one work.

[Jack of Diamonds]

Crossfire is bad for mining performance.
You should run each GPU separately, both connected to monitors or having a dummy plug.

Also, download AMD GPU clocking tool to force settings such as clock rate.

[dinker]

The problem is that Trixx don`t recognize 2nd card, just working with 1st.

Would this work to trick the trixx:
1. set clocks to the first card as usual
2. switch your primary display to 2nd card, so trixx treats your 2nd card as 1st display.
3. set clocks to the 2nd card(which is now hopefully detected by trixx as your 1st)

[Mousepotato]

Crossfire is bad for mining performance.
You should run each GPU separately, both connected to monitors or having a dummy plug.

Also, download AMD GPU clocking tool to force settings such as clock rate.

I have a similar issue (just got a 5830 as my 2nd card) and I'm having issues OC'ing it.  With the AMD GPU tool whenever I try to adjust the core/memory clocks I get a "Set clock failed! Please check device configuration" error.  Anybody got any tips to get this one working?