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Bitcoin => Bitcoin Technical Support => Topic started by: ElectricMucus on September 03, 2011, 03:28:59 PM



Title: Hardcoded overclocking limits?
Post by: ElectricMucus on September 03, 2011, 03:28:59 PM
I have a Llano APU, the A8-3850. It's "stock" is supposed to be 400mhz, and it as an official overclocking function (even advertised as 600mhz) I am ablt do do this in the bios (the Asus one actually runs it from stock at 600) and I can change the clock from 400-600 in MSI Afterburner.

However I am fairly certain this little thing could do at least 800mhz or more, 32nm process and such. But how do I obtain that. I tried various configuration tweaks with msi afterburner but nothing worked. Is this hardcoded in the firmware or just a driver issue?


Title: Re: Hardcoded overclocking limits?
Post by: deslok on September 03, 2011, 07:27:18 PM
I'm going to direct you to a toms hardware article specifically on that chip since i'm unfamilar with it and would only be repeating what they said.
http://www.tomshardware.com/reviews/amd-a8-3850-llano,2975-7.html


Title: Re: Hardcoded overclocking limits?
Post by: ElectricMucus on September 03, 2011, 07:40:35 PM
I've read that already b4 and this doesn't discuss overclocking the gpu part of it.
Overclocking the cpu doesn't do a thing the clocks are independent.

I've also looked quite thoroughly on google and nobody seems to be concerned about this topic.
How are the overclocking limits for dedicated cards handled anyway? Not that any is able to reach it...

I'm quite raging on the inside because of this, since I suspect a 100% overclocking capability beyond the 600mhz lock.


Title: Re: Hardcoded overclocking limits?
Post by: deslok on September 03, 2011, 07:44:25 PM
Ah i see, this is my mistake then the gpu mutipliers are currently fixed and unfortunatly we're long past the days of opening up cartridges to change multipliers(p2 anyone?)


Title: Re: Hardcoded overclocking limits?
Post by: ElectricMucus on September 03, 2011, 08:16:40 PM
no, no how you are coming up with multipliers? Yes the gpu part of the llamo probably is the new version of the celeron-300  ;D, but there shouldn't be any multiplier on the gpu (I can change it on the cpu all I want btw).

I more and more supect AMD already knew of the capabilities of the integrated gpu and took special measures to prevent further overclocking and giving out a waver for stock overclocking to the mainboard manufacturers. (Possible to still be able to sell their remaining stocks of low end cards or whatever)
I can't possible imagine a hardware lock on the clock and to my knowledge this wouldn't even be possible.

So either it is somewhere in the bios or it is just a driver issue.