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Author Topic: overvolting an asus 5870 in linux  (Read 2237 times)
gjs278
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March 28, 2011, 06:08:17 PM
 #1

I can currently volt up to 1.2125 which puts me stable at about 940 core clock. I'd really like to be able to overvolt to 1.35v like I can in windows using MSI Afterburner or Asus SmartDoctor.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814121374 is my card for reference. I can definitely reach 1000 core clock easily by upping the voltage in windows, but I can't get past what seems to be a hardcoded bios limit of 1.2125 in linux.

I've tried using the Radeon Bios Editor, but when I get to the clocks page I get the following:

http://img402.imageshack.us/img402/8150/screenshotuhq.png

the gpu / voltage registers are grayed out and when I try to manually set my voltage to 1.35v for Clock Info 03, aticonfig won't recognize the card in linux anymore even when I reinstall the drivers. RBE forums say this is because you have to change the voltage in the registers, but they are blanked out for me.

Does anyone have a working bios for my card that allows the voltage up to 1.35v OR a tool in linux that will let me volt as high as Asus Smartdoctor? Thank you.
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[Tycho]
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March 28, 2011, 06:22:16 PM
 #2

Actually 5870 should work fine @ 940 MHz with stock voltage.

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gjs278
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March 28, 2011, 07:17:45 PM
 #3

I'm looking more to enter the 1000 range.

edit: in my post I meant I can do 940 perfectly stable at my stock voltage, but I'd really like to go higher for faster clock speeds like I can in windows.
gjs278
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March 29, 2011, 06:46:25 PM
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still looking for something. the only research I've found so far is a bunch of people doing it on older versions of the 5870 and their 5850's using RBE, but it doesn't seem to work for me.
jkminkov
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April 01, 2011, 03:21:06 PM
 #5

read newegg reviews, one said - it's bios locked

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gjs278
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April 01, 2011, 08:24:23 PM
 #6

do you know of a 5870 that isn't bios locked?
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