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AMD R9 290/290X Overclockers Club - Page 41

post #401 of 588
Found another post regarding aux voltage:
http://www.overclock.net/t/1442987/gpu-auxiliary-voltage-help-what-does-it-do
post #402 of 588
The R9 290X is voltage unlocked the 280x is Voltage locked. There are custom BIOSes but even with a custom one it still comes down to the quality of your silicon that will decide how well you OC. If you read through the history of the thread you will find a few people talk about different BIOSes I think one is called like PT1 or something along those lines. I mean with me MSI AB would only do +100 but Trixx would allow me to do +200mv. There are guides out there for BIOS flashing the R9 290x and I think there are a few pointers here on this thread, I have never done it but if you want to do it go for it. The card has 2 BIOSes so you should be mostly safe from bricking in theory.

If you do flash your BIOS post the results I am actually interested in the results I have been toying with the idea of flashing my BIOS also.
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post #403 of 588
Could someone explain why it burned down though? I mean I see people going +100 on the aux voltage. I only did +10 and it got destroyed.
post #404 of 588
Quote:
Originally Posted by Mounty078 View Post

Could someone explain why it burned down though? I mean I see people going +100 on the aux voltage. I only did +10 and it got destroyed.

I assume you ment GPU temps earlier, did you watch the VRM temps?
post #405 of 588
Quote:
Originally Posted by Timer5 View Post

The R9 290X is voltage unlocked the 280x is Voltage locked. There are custom BIOSes but even with a custom one it still comes down to the quality of your silicon that will decide how well you OC. If you read through the history of the thread you will find a few people talk about different BIOSes I think one is called like PT1 or something along those lines. I mean with me MSI AB would only do +100 but Trixx would allow me to do +200mv. There are guides out there for BIOS flashing the R9 290x and I think there are a few pointers here on this thread, I have never done it but if you want to do it go for it. The card has 2 BIOSes so you should be mostly safe from bricking in theory.

If you do flash your BIOS post the results I am actually interested in the results I have been toying with the idea of flashing my BIOS also.

I did not mean that the OC result wasn't a lottery, I ment getting voltage fixed/stable. My 280x had a stable voltage after I flashed the BIOS.

Yeah, kinda bricked one of the BIOS on my 280x on the first try, wrong BIOS version. Ooops, rookie mistake:) Just used the switch and restored it.

It will take some time before I have it under water, but if I do a custom BIOS I can post some results.

I have a R9 290.
post #406 of 588
You know with the 290 you can flash it up to a 290x easily and get that nice performance boost. Just imagine having that card go from a 290 to a 290x then overclocking it.
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post #407 of 588
Quote:
Originally Posted by Mounty078 View Post

Could someone explain why it burned down though? I mean I see people going +100 on the aux voltage. I only did +10 and it got destroyed.

I am going to go with the idea of VRM temps. Did you have a VRM cooler? the Gelid one is a decent cooler I have one and it works like a charm the highest they get up to is like 78C while I am playing Metro last light (for some reason that game heats up my system more than Valley does)
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post #408 of 588
Quote:
Originally Posted by Timer5 View Post

You know with the 290 you can flash it up to a 290x easily and get that nice performance boost. Just imagine having that card go from a 290 to a 290x then overclocking it.

Assuming it's unlockable and the disabled cores are healthy. Sometimes the chips are locked to less CUs because the chip doesn't pass QA as an X, other times seemingly because they needed more non-X cards to sell in that price bracket
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post #409 of 588
Quote:
Originally Posted by Timer5 View Post

You know with the 290 you can flash it up to a 290x easily and get that nice performance boost. Just imagine having that card go from a 290 to a 290x then overclocking it.
Quote:
Originally Posted by Archea47 View Post

Assuming it's unlockable and the disabled cores are healthy. Sometimes the chips are locked to less CUs because the chip doesn't pass QA as an X, other times seemingly because they needed more non-X cards to sell in that price bracket

Well, "easily" I am not so sure about.
I have been reading the 290->290X unlocking tread and Hawai info stated that my card is unlockable.
The tread starts with only XFX and Powercolor being succesfull, and some reporting that their Sapphire (Which I have),
don't work even though the Hawai info state it should.

But if i don't find anything specific, i will post a reply on that post and ask if anyone have any success on Sapphire cards.
and which BIOS they used.
But disabled cores has to be stable of course, like @Archea47 says.
post #410 of 588
Quote:
Originally Posted by Mounty078 View Post

Could someone explain why it burned down though? I mean I see people going +100 on the aux voltage. I only did +10 and it got destroyed.

Main issue with 290's is its vrm1 temp. you can have a 70c core clock but a 90+c vrm temp. As your core is 82c ( which is already high in my opinion ) your vrm temps will probably be way higher then you want to them to be lower then 85c in my experience to get it stable. My old 290 would already have 85c on stress tests on the vrm while my core was around the 65-70c. And that was with extremely well cooled tri-x with a high fan profile.

So you probably fried your vrm's, as you didn't pay attention towards it and only watched your core., specially if you also started to increase the aux. You probably would have better results with lowering the voltages, if you didn't wanted to cool it better.

Quote:
Originally Posted by Nassenoff View Post

Hi,

I am putting my R9 290 on an EK waterblock, and today i run of couple of test so that I have som reference measurements to compare to later:
The card is a Sapphire R9 290 with exhaust fan/reference cooler and reference PCB layout, i don't mind the "hair dryer" since i bought it used with watercooling in mind.
I know that 1100 gpu and 1450 memory is fine without voltage bump. Had to wear ear protection though since the hair dryer were at 100% smile.gif.
I have not tried with voltage increase, I don't see the point with this cooler.

1: In MSI afterburner I am not allowed to go higher than +100 mv, I have tried using the CMD workaround with no luck. Is a custom BIOS neccesary to get this to +200 mV?
2: Even if I get this option and can adjust the voltage to +200mv, will the voltage be stable? The voltage is not stable even when the card is not thermal throttling.
Wouldn't it be best with a custom BIOS that locks the voltage to 1,2 or 1,3 voltage? Do anyone have a suggestion for a custom BIOS, i can update the post tomorrow with the BIOS version.
3: GPU-Z states max 213 max Watt, can this be right? Seems a bit low?
4; VRM 2: 78 and VRM 1: 63, I excpected to see the VRM 1 higher than the VRM2?
5: What you impact by changing the auxilliary voltage? Higher memory clock?

GPU-ZSensorLog_R9290stock_Valleybencmark.txt 380k .txt file

1: use trixx for higher mv, msi afterburner also can cause instability's in my experience
3: thats indeed low if you got it overclocked, probably test a bit more i saw spikes up to 340+ watt without issue's at tests
4: massively differences at differetn clocks and fan profiles in my opinion, you could check your cooler. but 1 290 here had same value's other had different value's.
5: more stability on your memory, i never used it as the 200+ mv was already kinda the limit i wanted to go, the little bit more performance i would get out of it isn't worth the risk to me.
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