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[Official] AMD R9 290X / 290 Owners Club - Page 1304

post #13031 of 43923
The odds of 1% effecting anything are very low. The only settings that really make sense are 0/20/50

negative ?? some might find use, but not with -1% wink.gif
0 for those who dont want to push more power than the card was designed for
20 for those who want headroom for an OC but less risk for some crazy power spike to kill the card (aka protect you if you are stupid and set voltage really high and open furmark)
50 for those who trust themselves and want no power limit issues holding them back
post #13032 of 43923
Agree, 1 or even 5% is useless use 20% and you will be fine smile.gif
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My System
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post #13033 of 43923
Thanks for the replies. So I'm guessing my 1125mhz is stable and possibly I can get a higher overclock if I went with more powerlimit + voltage?
post #13034 of 43923
Powerlimit wont really improve your OC capabilities in the way you might think. But it does make high OCs possible. All I mean by that is when you increase voltage, the chip is actually capable of being stable at a higher clockspeed. Power limit will prevent the clock speed from going that high if its too low, though.

I've tricked myself multiple times OCing without increasing the power limit. You think the card is stable at a certain clockspeed and later realize, due to the power limit being hit, the card throttled and was actually running at a slower speed than you though.
post #13035 of 43923
Quote:
Originally Posted by Derpinheimer View Post

Powerlimit wont really improve your OC capabilities in the way you might think. But it does make high OCs possible. All I mean by that is when you increase voltage, the chip is actually capable of being stable at a higher clockspeed. Power limit will prevent the clock speed from going that high if its too low, though.

I've tricked myself multiple times OCing without increasing the power limit. You think the card is stable at a certain clockspeed and later realize, due to the power limit being hit, the card throttled and was actually running at a slower speed than you though.
Thanks for the info. Kinda sad now that my overclock might not be actually stable. It made it through 3 loops of Valley tho. I'll find out tonight tho thumb.gif
post #13036 of 43923
Quote:
Originally Posted by psyside View Post

Guys, Tri x oc is ~ 70c max on vrm's with 1.3v @1150/1450 thumb.gif


What fan speed was that at?
Quote:
Originally Posted by Derpinheimer View Post

Powerlimit wont really improve your OC capabilities in the way you might think. But it does make high OCs possible. All I mean by that is when you increase voltage, the chip is actually capable of being stable at a higher clockspeed. Power limit will prevent the clock speed from going that high if its too low, though.

I've tricked myself multiple times OCing without increasing the power limit. You think the card is stable at a certain clockspeed and later realize, due to the power limit being hit, the card throttled and was actually running at a slower speed than you though.

Yeah, I've done that a few times with the Afterburner power limit bug. Set it up and run through Firestrike at a high clock and get worse than stock scores. Then the lightbulb goes on and you check CCC and the power limit is still 0% and the card was running 900MHz the whole time.
post #13037 of 43923
Quote:
Originally Posted by Forceman View Post

What fan speed was that at?
Yeah, I've done that a few times with the Afterburner power limit bug. Set it up and run through Firestrike at a high clock and get worse than stock scores. Then the lightbulb goes on and you check CCC and the power limit is still 0% and the card was running 900MHz the whole time.
Looks like 70% or 3300RPM.

Im loving this PT3 bios with inf. power limit biggrin.gif
Quote:
Originally Posted by Tennobanzai View Post

Thanks for the info. Kinda sad now that my overclock might not be actually stable. It made it through 3 loops of Valley tho. I'll find out tonight tho thumb.gif

Best of luck to ya wink.gif. I think you'll be ok. With no voltage increase, power usage doesnt go up all that much.
post #13038 of 43923
Quote:
Originally Posted by Forceman View Post

What fan speed was that at?
Yeah, I've done that a few times with the Afterburner power limit bug. Set it up and run through Firestrike at a high clock and get worse than stock scores. Then the lightbulb goes on and you check CCC and the power limit is still 0% and the card was running 900MHz the whole time.

Quote:
Originally Posted by Sgt Bilko View Post

Thats just weird then...hopefully you figure it out. That GPU score mixed with a 10k physics score would be hella nice smile.gif


I think it has something to do with the BIOS, I just got around using PT1 BIOS and I noticed right away that I am getting 9.8k Physics score now, but my combined score is down by 2FPS with PT1 BIOS, while with stock Sapphire BIOS I am getting 16-17Fps on combined run while Physics run gets 8.9-9k only.


really freakin weird. Imma use other BIOS's from XFX and stock Asus BIOS to see if that have any effect on it. I did verify this by switching from PT1 and stock Sapphire BIOS several times now and everytime I have PT1 on Physics score is up, combined score is down while Sapphire stock BIOS combined score is up physics score is down, really damn weird.
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Phenom 1090T
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post #13039 of 43923
Just started mining LTC and it seems that the train was missed. At approximately $23 for 1 coin and at 868Kh/s that's 0.27 LTC / Day A bump under 4 days of straight mining for around $25 is not worth the energy bill. I guess 1 card just isn't gonna cut it. Oh well, back to a game card as I originally purchased it for.
post #13040 of 43923
Quote:
Originally Posted by jerrolds View Post

VRM temps on stock are better than 3rd party solutions atm...you can get a decent overclock at quiet fan speeds as long as ambient isnt too bad. 1100mhz w/ 53% fan speed should hover around 90C on the core, and shouldnt throttle. At least for me it didnt.

55% is where it got too loud for me personally.

Not entirely true. At least not for me. My VRM temps are under 40c for VRM 1 and under 52c for VRM2. I made custom coolers out of old CPU heat sinks by cutting them down to size. They are about 3/8 of an inch wide, cover the length of the VRM sections and are 1.25" tall. About 5 fins per sink. With a 120 fan pushing air over the card and a water cooler on the core I don't get any temps above 53c on anything on the card. Not quite as good as full water but not too bad.

If you have some old cpu heat sinks and a hack saw anyone can make these heatsinks for the RAM and VRM's for the 290/290x series cards. Not exactly pretty, but if you're mining, who really cares? Not me.
     
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