MSI 480GTX Lightning

[YerMother]

Hi Guys

New to the forum. Love the site, it's full of great info.

I'm hoping for a bit of advice from you pros! I have my 480Lightning on chilled water. GPU load temps are around 35 - 40'C I have had it stabily running for a while now @ 960/1200 with +137mV (approx 1.24V) on the core and +120mV (approx 1.7V) on the Memory with a touch of aux voltage for good measure. I got to 960 so easily and now have seem to hit a nuclear reactor sized concrete wall!!! I am just met with lockups and grey screens no matter what I do to the voltages. Any ideas guys?

Would it make any differences switching to the other on board bios?

I have tried with and without overcurrent protection on, which makes no difference at all.

Any comments will be appreciated.

Sie