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Would an after-market HSF improve overclocking? - Page 2

post #11 of 19
Thread Starter 
Quote:
Originally Posted by adas
Sheidow is right....I mean it's not for SURE, but the Thermaltake doesn't have poo for power, and the Asus probably has the same 12v rail the TT does

But since it works at stock, it's either right at the point of not enough power, OR, maybe it's not a power problem. What you should try is downclocking your cpu to stock speed and voltage, then see if you can OC the videocard more

If that doesn't help, what are your temps? If they are fine, then I don't know what to tell you man
I'm just gonna run 3Dmark05 then switch straight to the temperature monitor in the driver control panel to see what the load temp was. As for idle it's 46*C

I'll post back in a sec.
post #12 of 19
Quote:
Originally Posted by t4ct1c47
I'm just gonna run 3Dmark05 then switch straight to the temperature monitor in the driver control panel to see what the load temp was. As for idle it's 46*C

I'll post back in a sec.
Check my Edit on the last page for tips
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post #13 of 19
Thread Starter 
57*C at load. Thats on stock settings (490/1300).

I'm not sure if thats what a GTX is supposed to be, but it doesn't seem that high to me. I'll have to wait until I get chance to upgrade the PSU before I try pushing the card further I guess.
post #14 of 19
Thread Starter 
I got some upgrades today and one of the things I replaced was my PSU frtom the Asus 350W to a Tagen 530W. I'm running my card at 500/1330 at the moment with no problems. It must have been the PSU as already suggested, but as I could overclock my CPU without any problems I failed to realise this.

Cheers for the input everyone.
post #15 of 19
just goes to show...power is every thing
glad you got it figured out
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post #16 of 19
Thread Starter 
Update;

I'm getting artifects on 3Dmark2005 with settings higher than the satndard 490/1300 so I've reverted the clocks back to default. My CPU has been fine and it's only in one or two games that I get artifects when my card is overclocked. Now I know it isn't the PSU this time so would it be best to invest in an aftermarket HSF? I've been looking at the Arctic Cooling 7800 GTX one at about £13/£14.
post #17 of 19
Same card brand..eh? Well.... XFX don't seem to overclock too well, had the exact same problem. But if you're serious about gaining some mhz' try a fan and/or heatsink mod. Mine cost me €5: 80mm fan, some card board and tape. And from what I've seen it's about as effective as a zalman. Got rid of my artifacts and let me oc from 450/1250 to 500/1380. Check out the pick below:

Also (heatsink mod):

Quote:
Originally Posted by diehrd
Here is stock and after my heat sink mod using a 1U passive Xeon heat sink

http://img.photobucket.com/albums/v87/diehrd/Image4.jpg

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post #18 of 19
Thread Starter 
So better cooling helped you overclock your card? Looks like it may be worth investing in an Arctic Cooling NV5 Silencer.

I can run my 7800 @ 500/1330 which is only 10/30 over it's default clocks but as I said, I get artifects in some games. Especially in 3DMark2005 when I benchmark my rig.
post #19 of 19
Hmm I would now suggest the heatsink sortof odd how it will get aritfacts in 3dmark. I can put my card really high 500/1.25 and run 3dmark fine, but then in games artifacts alot. As for what cooler to get zalman and artic cooling are both really good and zalman has a new one coming out here soon.
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