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Overclocking advice

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Joined
10 Dec 2008
Posts
4,080
Location
London
I have a watercooled 5970

I can overclock it massively from within windows, and it works 100% perfectly, no crashes, nothing. For hours. I know my system keeps it cool enough.

Then I shut down the PC.

When I turn it on again there is about 0.5 seconds delay before the water is pumping around the system properly. The card WITHIN THIS 0.5 SECONDS IMMEDIATELY overheats and shuts itself down (red light appears on top of card). It does not start at all. It does not say 'hold on, the temperature seems OK now I've got moving water' -- it just closes down until I turn the PC off and on again.

The thing is, if the card would just have a little faith and start up (or alternatively just wait for a couple of seconds for the water and see for itself how wonderfully cool it was) I KNOW the temperature would be fine and it wouldn't have to shut itself down. It only overheats for under a second but in that time decides it's going to go into 'emergency give up' mode!

So, unless I want to manually overclock the card every single time I get into Windows -- I have to run at stock speeds so it doesn't overheat in the first 1 second..

Does anyone have any suggestions please? Anything greatly appreciated ..? I'm half tempted to think of some way to start the pump before I send electricity to anything else ...? Any other ideas?
 
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