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Overclocking Memory on 9800GTX - Page 2

post #11 of 20
Thread Starter 
ok , ill do that....just burning a movie atm , soo cant do it right away...but fan speed???.....will let ya know wot happens!
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post #12 of 20
Thread Starter 
ok , put fan speed to 100% , and when I oc memory from 1100 to 1200 , when I hit apply , white screen...pure white..???
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post #13 of 20
Thread Starter 
ok update....

Tried it again , white screen , flashes to black....then back to windows perfect telling my the driver has crashed???....the overclock has not changed (still its 1200) , but the fan speed has gone back to auto control???
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post #14 of 20
Thread Starter 
update again....

I can hear the fan when it is on 100% , for some reason the fan stops , and boom , black screen , can still see and move my mouse , but thats it.....

seems like a driver or something software?
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post #15 of 20
You're not the first person to report having issues keeping up the fan speed with an 9800 card, don't know if 'the problem' has been run down yet. Seems likely a driver issue. And YES, fan speed ABSOLUTELY affects your max overclock on these cards, I strongly suspect it's because the memory heats up, and the mem chips have no sensors on them, so you have to manually crank up the fan.

BTW, you *are* setting the fan speed in the 'low level tweaks' section, not the 'system tweaks', area in RT, right?

The problem *could* also be that not all 9800GTX's use the exact same memory chips, and hence, some of them are going to overclock higher than others. But I don't know that to be the case, it's something you'd have to research probably. If it makes you feel any better, the difference in FPS between 1100 and 1200MHz on the memory clock is going to be so incredibly miniscule that it's probably not worth worrying about
    
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post #16 of 20
Thread Starter 
no difference in fps??...ok...then i dont care...my core clock and shader oc's fine...soo im happy with that then
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post #17 of 20
Sorry to hijack but Brettjv how come you have to set the fan in the low level tweak area rather than the system's tweak area?
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post #18 of 20
Well, when I had the 8800GTS 320 that was the only way it would work, so nowadays I just use the setting that I know works properly on 8800 cards. The other one may work fine too on the newer cards, but I've never tried it. I suspect it's a little more sure-fire to work in the low-level settings because it avoids using the driver to manipulate the fan speed and goes straight to the card. At least, that's the theory if I understand it correctly...
    
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post #19 of 20
Quote:
Originally Posted by mcogan10 View Post
because you're a noob? Just set the fan speed to 100%, its one less thing you have to worry about.
Did all the trolls come out to play on this thread today? Wow...

It only matters if the fan speed is 100% if your temperatures are causing the failure. Making sure the fan is at 100% speed at all times will ensure that you are getting the most out of your card temperature-wise.
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post #20 of 20
Should of got one of those SSC eVGA cards

Just wondering anyone know how they do on water yet are high temps a big issue with these cards?
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