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How To: Overclock Your AMD / ATi GPU - Page 19

post #181 of 644
Since GPUTool doesn't work on my PC (Windows 7 incompatibility apparently) I'm going to try using OCCT instead since that seems pretty highly recommended across forums. What settings should I use in it for a 5970 though? I tried default shader values (0) and fullscreen 1920x1080 and that only got my utilization up to 99% on both cores. I would knock the shader value right up to the maximum of 8 and call it a day but the program says higher values aren't necessarily better. Another issue is that the program can't detect my GPU temps so if I use fullscreen I have no idea what my temps are until the test is over. You guys know of a way to fix the problem, or would it be possible to not use fullscreen but still get 100% utilization?

Also, is it safe to leave a program like OCCT running for 30 minutes? I know that furmark can literally kill a card if left running for too long, so do I run the same risk with OCCT?

Finally, as far as artifacting in games goes, how difficult is it to spot? Is it usually glaringly obvious where you can't possibly miss it, or can it be something like a very quick flash of a few black pixels where you have to stop and wonder if that's really an artifact or just a benign graphics glitch that's normal for the game?
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post #182 of 644
Quote:
Originally Posted by MooMoo View Post
you are doing it wrong
damnit, how did i miss that?

here we go
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post #183 of 644
Hi all. I'm a total noob when it comes to OC. I'm thinking of buying either a non-ref ASUS 5850 CuDirect or the Sapphire Vapor-X 5850 for my new rig.

As long as i follow the steps in the 1st post, the OC should go smoothly?

And how many increments should i up the voltage by each time? How will i know if the voltage i set is too high?

Do i set the clock and core speeds 1st or the voltage 1st?

If anything goes wrong somewhere in between the OC process, what should i do?

Thank you in advance!
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post #184 of 644
Quote:
Originally Posted by sundeath View Post
Hi all. I'm a total noob when it comes to OC. I'm thinking of buying either a non-ref ASUS 5850 CuDirect or the Sapphire Vapor-X 5850 for my new rig.

As long as i follow the steps in the 1st post, the OC should go smoothly? It should

And how many increments should i up the voltage by each time? How will i know if the voltage i set is too high? See below.... also, i would over shoot the voltage (maybe 1.2 V depending on the clocks you want to get) then, once you find a stable OC, back down the voltage slowly until you get artifacts.

Do i set the clock and core speeds 1st or the voltage 1st? doesnt matter, however its recommended that you up the clocks till you get artifacts, then bump the voltage until you gain stablility

If anything goes wrong somewhere in between the OC process, what should i do? depends, if you freeze, just restart the comp. If you dont freeze, either back down the clock or up the voltage and try stability testing again.

Thank you in advance!
One thing to consider if you want to OC considerably is that non-ref cards do not have voltage control. so my suggestion to you would be to seek out a reference card if you desire voltage control and, therefore, higher clocks. If you cant find a ref card (or flat out dont want a ref card), no worries, the guide still works for you (minus voltage control). Plus, some people can get 900/1200 on stock volts (not common, but happens).
Edited by thebigrobbyrob - 6/17/10 at 3:02am
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post #185 of 644
hey robbyrob, thanks alot. think i'll get a non ref card in case i do not want to OC. Most prob the powercolor PCS+ or the sapphire vapor-X. Which do u recommend, taking in account that i might not be OC it?
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post #186 of 644
Thanks for the guide! I reached my goal so Im happy.

I still dont know what card I have I looked at some reviews of Toxic 4890 and I have the PCB of a toxic with an 8 pin, but a stock 4890 OC cooler, and the clock speeds of OC. Flashed it to Toxic BIOS and its fine. Ive asked around, everyone elses OC models have 2 6 pins? :S



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post #187 of 644
Gonna try it out...
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post #188 of 644
hey d00ds, what would be a safe OC range for my Sapphire 5850 Toxic Edition? I'm not looking into extreme OC action. Just a mild OC will do for the moment
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post #189 of 644
thx, nice guide! got my 5770 to 970/1380 on stock volts.. is that decent??

anyways i have a questions. so after OCing with afterburner, i click the apply at system startup, but it doesnt apply it? when i check my cpu-z it still have stock speeds.. why is this?
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post #190 of 644
Quote:
Originally Posted by timf808 View Post
thx, nice guide! got my 5770 to 970/1380 on stock volts.. is that decent??

anyways i have a questions. so after OCing with afterburner, i click the apply at system startup, but it doesnt apply it? when i check my cpu-z it still have stock speeds.. why is this?
Make sure that Afterburner is set to Start with Windows in Settings.
Also, try running an application that stresses the GPU and see if your clocks change, it could just be that your card downclocks to stock when there isn't much load.
By the way, GPU-Z is better than CPU-Z for this purpose.
 
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