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Squeezing EAH4850 1GB (basics)

post #1 of 8
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Before i do that i'd like to ask some questions (i'm overclocking noob so plz excuse my lack of knowledge).

I believe that only high temps can damage GPU or CPU thus frequence and voltage can be managed to hearts extent as long as it doesn't overheat, am i right? And of course i would imagine the higher is the voltage over the stock the lower is the ''overheating damage temp''?

So first of all i will find out max stable frequences (stock voltage, stock cooling) then tuesday i will install gigabyte 3d galaxy II + blue eye cooling system, discover max stable frequences again and maybe proceed to the voltage right away.

Increasing frequence alone isn't potentialy dangerous? What else should i know about overclocking before i get started?

Btw i'm getting some artifacts as it is now (all stock) :/ clearly not overheating issue - running caseless with 100% fan speed. I'll downgrade a driver i guess.
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post #2 of 8
Quote:
Originally Posted by DEADmetal View Post
Before i do that i'd like to ask some questions (i'm overclocking noob so plz excuse my lack of knowledge).

I believe that only high temps can damage GPU or CPU thus frequence and voltage can be managed to hearts extent as long as it doesn't overheat, am i right? And of course i would imagine the higher is the voltage over the stock the lower is the ''overheating damage temp''?

So first of all i will find out max stable frequences (stock voltage, stock cooling) then tuesday i will install gigabyte 3d galaxy II + blue eye cooling system, discover max stable frequences again and maybe proceed to the voltage right away.

Increasing frequence alone isn't potentialy dangerous? What else should i know about overclocking before i get started?

Btw i'm getting some artifacts as it is now (all stock) :/ clearly not overheating issue - running caseless with 100% fan speed. I'll downgrade a driver i guess.
Well considering its a 55nm process (4850), you can't just boost the voltage to whatever. I personally would not go anything over 1.45V (and that includes an aftermarket cooler) if you plan on hardmodding.

You are correct about frequency. Upping that cannot kill the card alone, unless it causes massive heat increases that go unchecked without proper cooling. Although, it may shorten the life of the card slightly, but not anything massive.

Artifacting at stock does not sound good. What drivers are you using? and make sure you clean install them.


CPU's are different animals. Like your cpu, being 45nm, never push it over 1.362. As it can potentially kill the CPU.
Edited by Slappa - 12/12/08 at 6:14pm
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post #3 of 8
Yes and no. For your CPU you should not go over 1.368 voltage for a 24/7 overclock.
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post #4 of 8
Thread Starter 
Quote:
Originally Posted by Slappa View Post
Artifacting at stock does not sound good. What drivers are you using? and make sure you clean install them.
Yeah :/ artifacts in Fallout 3 and 3dmark03 (didnt try much more apps)

Catalyst 8.12. Downgrading to 8.10

edit ----------------------------

artifact problem moved to http://www.overclock.net/ati/425055-...ml#post5087658
Edited by DEADmetal - 12/12/08 at 7:44pm
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post #5 of 8
Quote:
Originally Posted by Nv1si0n View Post
Yes and no. For your CPU you should not go over 1.368 voltage for a 24/7 overclock.
According to Intel...
    
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post #6 of 8
If you keep getting Artifacts, you could try under clocking the GFX Memory! I have to knock mine down by 32mhz from 1800 to 1768
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by ACHILEE5 View Post
If you keep getting Artifacts, you could try under clocking the GFX Memory! I have to knock mine down by 32mhz from 1800 to 1768
Yeah i did that - underclocked from 1004 to 960 and overclocked GPU to compensate - from 625 to 700 and no artifacts, performs a little bit better than stock and scoring over 1200 in 3dmark06 so i'm ok for now.

Seeing one more user with same problem i wonder if its my cards fault after all or maybe your card is damaged as well?

I'll put liquid cooling and memory heatsinks on this failure soon, wonder how much would it help.

Btw atm i'm running caseless with 100% fan power so GPU temps are rly ok, dunno about memory.
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post #8 of 8
if you guys are getting artifacts at stock you need to rma the card!
    
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