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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 628

post #6271 of 38701
Quote:
Originally Posted by Newbie2009 View Post

I think the point is, if it was not unlocked, max volts he can put in is 1.3v, regardless os asic. mmmm interesting. That bios will not work on my HIS unfortunately to test myself. frown.gif

The lock is .125v over asic. There's clearly a link between asic, voltage, and ocp. I always wondered what happens if god forbid you got a 50% chip which equals 1.19v or something, does ocp top off at 1.3v or does it still give you the .125v overhead.

If Parton can volt past .125v, then ok maybe its unlocked or raised a bit. So can ya get past 1.31v?
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post #6272 of 38701
Quote:
Originally Posted by tsm106 View Post

The lock is .125v over asic. There's clearly a link between asic, voltage, and ocp. I always wondered what happens if god forbid you got a 50% chip which equals 1.19v or something, does ocp top off at 1.3v or does it still give you the .125v overhead.
If Parton can volt past .125v, then ok maybe its unlocked or raised a bit. So can ya get past 1.31v?

Yeah its possible. Especially looking at the clocks he is running at those volts. eeek.
post #6273 of 38701
Quote:
Originally Posted by tsm106 View Post

The lock is .125v over asic. There's clearly a link between asic, voltage, and ocp. I always wondered what happens if god forbid you got a 50% chip which equals 1.19v or something, does ocp top off at 1.3v or does it still give you the .125v overhead.
If Parton can volt past .125v, then ok maybe its unlocked or raised a bit. So can ya get past 1.31v?

You've got to understand that the 1.31 is merely a result of the load on the card. More load would drop it further, less load would result in less vdroop. You know this, though.

Ignore the clock speeds. I set them arbitrarily.

Stock no load:

338

Max no load:

338

Stock example load:

338

Max example load:


338

Fixed.
Edited by PARTON - 3/13/12 at 10:31am
    
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post #6274 of 38701
Sorry, I don't see anything over 1.31v. Prove it man, it's all I ask. Btw, use hw64info or whatever its called.
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post #6275 of 38701
Quote:
Originally Posted by PARTON View Post

You've got to understand that the 1.31 is merely a result of the load on the card. More load would drop it further, less load would result in less vdroop. You know this, though.
Ignore the clock speeds. I set them arbitrarily.

I've never seen gpu droop on the order of magnitude you are claiming, .08v!! Gpu droop is normally .01v to .02v even under LN2.
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post #6276 of 38701
Stock bios:

setpoint stock/max:

1.175/1.300

actual under load:

1.12/1.23 => +110mv was max overvolt



Asus test bios:

setpoint stock/max:

1.175/1.400

actual under load:

1.12/1.31 => +190mv is new overvolt
    
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post #6277 of 38701
Quote:
Originally Posted by Newbie2009 View Post

I think the point is, if it was not unlocked, max volts he can put in is 1.3v, regardless os asic. mmmm interesting. That bios will not work on my HIS unfortunately to test myself. frown.gif

Are you flashing from a usb boot drive in dos? A reference HIS card should take the bios just as easily as any other ref card.

I believe I used these parameters to force the flash:

atiflash -p -fs 0 asushd~1.bin
Edited by PARTON - 3/13/12 at 10:48am
    
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post #6278 of 38701
Quote:
Originally Posted by PARTON View Post

Stock bios:
setpoint stock/max:
1.175/1.300
actual under load:
1.12/1.23 => +110mv was max overvolt
Asus test bios:
setpoint stock/max:
1.175/1.400
actual under load:
1.12/1.31 => +190mv is new overvolt

What's the max core clock you can get with that bios?
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post #6279 of 38701
***...everyone seems to be getting miles more performance than me.

BF:3 for reference:

In 1080p with EVERYTHING MAXED, including MSAA 4x, I get 54 minimum and usually between 58-66 on 1080p on larger back to karkand maps, and 64 player maps such as caspian border. On the team TDM like noshair canals or w/e it's called I usually only get an increase in 8 fps on that...

Edit: Running 1220 Core, 1850 memory. 1.625 memory voltage, 1274 core voltage (100% stable, I can lower it to 1258 or so with no crashes but the occasional artifact - yes I know I have a crappy GPU which would benefit from WCing but I'm waiting for a new CGN/Kepler before I go multi GPU and watercoolz). Thanks!

Edit: How do people get more than 1.3v on the core?
Edited by JassimH - 3/13/12 at 11:18am
    
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post #6280 of 38701
Quote:
Originally Posted by Hambone07si View Post

What's the max core clock you can get with that bios?

Set at 1.4v results in:

1.37v no load, drops to 1.31v under heavy load.

Max with stock bios was 1.3 setpoint resulting in 1.244v under full load.

The asus oc bios allows me additional over-voltage of about 70mv.
Edited by PARTON - 3/13/12 at 11:24am
    
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