Gigabyte 7990 malta LTC mining guides?

[Ghepetto]

Primary use for this card is gaming.

With that being said I am looking for settings to mine LTC.  I would be happy with another 1000 kh/s in addition to my mining rig.  I am not looking to push this card to the max.  I have seen reports of people easily achieving 1100 mh/s with SHA.   

Are there any guides out there for scrypt mining and/or has anyone had any experience mining ltc with one of these?

My system runs fine while gaming but restarts on just about any mining config I have thrown at it thus far, just at different time intervals  (no evidence of AMD driver crash).

Running one GPU seems to be stable.

My gut is telling me my PSU is insufficient (700W OCZ) but I know there are many people far more knowledgeable than myself on these forums. 

Temp on the hottest chip is usually around 78-79c when it crashes so I am pretty sure its not a heat dissipation issue.

[Ghepetto]

UPDATE


Stability achieved when under-clocking the memory 3000mhz and the GPU 75mhz,   although slight artifacts are generated still need some tweeking.


1000 kh/sec


Using Gigabyte OC GURU & Gui Scrypt  Fans on Auto

925/1500  TC8192 G1 I13

[greaterninja]

what temps do you get on your gigabyte 7990?


mine hit 85+

[dogie]

what temps do you get on your gigabyte 7990?


mine hit 85+

xD

[Ghepetto]

what temps do you get on your gigabyte 7990?


mine hit 85+

xD

79 max

[notaek]

I'm sure if you sent it to me I would be able to tell you how to get it above 1.2khs

[Ghepetto]

Sure whats your address?



Its easy to get it over 1.4 just diff to keep it cool.  I'm using stock cooling w no extra fans, actually trying to preserve this card somewhat.

[greaterninja]

what temps do you get on your gigabyte 7990?


mine hit 85+

xD

79 max

yeah its funny my gigabyte runs a little hotter than my sapphire 7990...maybe newegg gave me a lemon 7990 gigabyte.   i guess i'll try the other 7990 gigabyte i have still sealed and find out.

[Ghepetto]

Not using a case here FYI, before you crack that open