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Would an after-market HSF improve overclocking?

post #1 of 19
Thread Starter 
Hi all,

I currently have an XFX 7800GTX 256MB "Extreme Edition" (490/1300) but cannot overclock this card anymore than its stock setting without artifects. I'm guessing this is down to overheating so would something like an NV Silencer from Arctic Cooling enable me to raise the core and memory clocks a little more?

I ask because I've seen many people overclock their GTX's to something like 500/1350.
post #2 of 19
Yeah, it could, but it would only help if your temps right now are high.

You should be able to overclock at LEAST a bit without a need for another heatsink.
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post #3 of 19
Well, the XFX card comes overclocked by default, so it may have hit its max. How long have you had it? Some cards need some time to "burn in" before you can overclock it to its max.
post #4 of 19
Thread Starter 
No can do. I'm using Nvidia's CoolBits and often it wont let me raise the core or memory clock at all. I've never raised either by more than 10Mhz and when they do work I get artifects.

I've had this card since September.
post #5 of 19
What kind of temps are you getting?
post #6 of 19
WOw man I don't think its the cooler giving you problems at all. Look at the minimum wattage and then look at your powersupply. 350 watts is not even close to enough to run that set up. Id say buy a new powersupply first then try. Your not even using that card to its potential yet.
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post #7 of 19
Thread Starter 
Quote:
Originally Posted by sheidow
WOw man I don't think its the cooler giving you problems at all. Look at the minimum wattage and then look at your powersupply. 350 watts is not even close to enough to run that set up. Id say buy a new powersupply first then try. Your not even using that card to its potential yet.
I used to have a Thermaltake 480W PSU. Even with that I couldn't overclock without artifects, so it can't be the PSU. Though I do intend to get something like a Tagan in the new year as I'm moving onto SLi which will DEFINATLEY require more than 350W.

How should I monitor my temps? I know there is that thing in the driver control panel but after running a benchmark and switching to it the GPU will have cooled down by then. Though it's idle temperature is 46*C.
post #8 of 19
Im saying its your psu because look at everything you have in there. You probably don't have enough amperage and a thermaltake 480w psu probably doesn't either. If you can't oc past stock then there is something wrong and I looked at your 3dmark 05 score and thats low for a gtx as my friends is beating it with a gt.
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post #9 of 19
Thread Starter 
Quote:
Originally Posted by sheidow
Im saying its your psu because look at everything you have in there. You probably don't have enough amperage and a thermaltake 480w psu probably doesn't either. If you can't oc past stock then there is something wrong and I looked at your 3dmark 05 score and thats low for a gtx as my friends is beating it with a gt.
480W wasn't even enough for a GTX? A very quick question then, the Tagen I'm getting is 530W, will that be enough for me to mildly overclock 2 GTX's?

I've also tried setting my CPU to it's default clock to try overclocking my GTX but thats a no-go too.
post #10 of 19
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

Edit: play css for like 20mins, minimize straight into the nvidia control panel with the temp monitoring open, that will pretty much give u temps, OR use the 3dview in ATItool.

530w probably most likely won't be enough for 2 GTX's, but it could be.
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