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[Official] AMD R9 290X / 290 Owners Club - Page 1814

post #18131 of 43923
Quote:
Originally Posted by Roy360 View Post

want to end up with Quad fire smile.gif
Got one XFX R9 290 when it first came out 409.99 from NCIX
Got a VisionTek R9 290 for 339.99$ from Dell
Got an ASUS R9 290 DU OC for 539.99 from NCIX <---Not sure if this one is a keeper
the last one is undecided.


I have an AX1200i, so hopefully that will be enough to power these cards, 100A on the 12V rail, plus max power draw is ~1504W


Decided not to get the internal sample. Tons of people on rfd said it wasn't worth the risk, the seller was a bit of an @sshole too, so I didn't bother

I'm also running a internal sample, my company buys a lot of FireGL cards and we got 5 internal 290X as a gift last December. Awesome chip, not sure why they told you there is a risk, rma is easy with these, just call and give them serial, they take care of the rest. Haha, last time I rma'd a 7970 they even called me a week later to ask if everything was ok. Oh well, how did you pay so little for one from Dell?


BTW, that AX1200i most likely won't cut it for anything more then stock clocks. Here is some math:

4 x250watt (r9 290) = 1000watt leaving you with 200 watt for rest of the system, there is nothing wrong with running the AX1200 at near it's peak but peak nubmbers are not meant to be taken as rated sustained draw. You will A) kill the psu or B) it most likely will shut down due to over current protection
Edited by vortex240 - 3/2/14 at 2:16am
post #18132 of 43923
Quote:
Originally Posted by Paul17041993 View Post

you can always undervolt and underclock the cards if you wanted to, they handle it quite well and someone here did it with his 290 trifire with quite spectacular results, though his was on air so less power draw meant no throttling.

How do you undervolt a 290/x? Neither the Powercolor PCS+ nor the Tri-X 290 allow undervolting.
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post #18133 of 43923
Quote:
Originally Posted by taem View Post

How do you undervolt a 290/x? Neither the Powercolor PCS+ nor the Tri-X 290 allow undervolting.

afterburner, set voltage to as low as -100mV? trixx unfortunately doesn't have undervolt support but I'm pretty sure you should be able to do it with any card in afterburner, unless of course you don't have voltage control in there entirely...
   
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post #18134 of 43923
Quote:
Originally Posted by Paul17041993 View Post

afterburner, set voltage to as low as -100mV? trixx unfortunately doesn't have undervolt support but I'm pretty sure you should be able to do it with any card in afterburner, unless of course you don't have voltage control in there entirely...

Tried AB. I can adjust voltage up but it won't let me go below 0. When I try it just bounces back to 0.
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CoolingCoolingOSMonitor
Alphacool NexXxoS XT45 280 radiator Watercool Heatkiller GPU-X3 290X Windows 8.1 Qnix QX2710LED 27" 2560x1440 monitor 
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Crucial m500 SSD LG GGC H20L Bluray/HDDVD combo drive Watercool Heatkiller IV Pro all copper Alphacool NexXxoS XT45 420 radiator 
CoolingCoolingOSMonitor
Alphacool NexXxoS XT45 280 radiator Watercool Heatkiller GPU-X3 290X Windows 8.1 Qnix QX2710LED 27" 2560x1440 monitor 
KeyboardPowerCaseMouse
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post #18135 of 43923
Quote:
Originally Posted by taem View Post

How do you undervolt a 290/x? Neither the Powercolor PCS+ nor the Tri-X 290 allow undervolting.

Both cards use reference PCB, I have tried both of their bioses on my reference amd card. The PCS+ bios runs higher volts(like a regular 290) - so I didn't like it for extra heat, Tri-X runs stock volts of a reference 290X.

If you have a reference board, you can flash ANY and I mean ANY bios that came from a reference card. Hope this helps.
post #18136 of 43923
Quote:
Originally Posted by taem View Post

Tried AB. I can adjust voltage up but it won't let me go below 0. When I try it just bounces back to 0.

That's an issue with the newer drivers, AB only allows undervolting on 13.12 and 13.11 it seems.
post #18137 of 43923
Quote:
Originally Posted by vortex240 View Post

I'm also running a internal sample, my company buys a lot of FireGL cards and we got 5 internal 290X as a gift last December. Awesome chip, not sure why they told you there is a risk, rma is easy with these, just call and give them serial, they take care of the rest. Haha, last time I rma'd a 7970 they even called me a week later to ask if everything was ok. Oh well, how did you pay so little for one from Dell?


BTW, that AX1200i most likely won't cut it for anything more then stock clocks. Here is some math:

4 x250watt (r9 290) = 1000watt leaving you with 200 watt for rest of the system, there is nothing wrong with running the AX1200 at near it's peak but peak numbers are not meant to be taken as rated sustained draw. You will A) kill the psu or B) it most likely will shut down due to over current protection

peak power on the AX1200 says 1504W, 204W for the system and 1200W on the 12V rail, but I"m probably pushing. I guess I"ll stop at 3 cards. dang, if only I had the Phantek primo. I'd be running two psus, that would probably cost less than the AX1200
post #18138 of 43923
Quote:
Originally Posted by taem View Post

So I took out the 290 Tri-X, gonna return it, I should have listened to you guys who were trying to tell me 290 xfire would be bottlenecked by my 4670k. It's just not worth it to run xfire at this point, my psu can't oc two cards and my cpu can't handle the full power anyway. Since I can oc a single card xfire at stock clocks is getting me a 20% boost at best.

But now I'm having issues with my single card. It was running fine with no down clocking, now clock fluctuates quite a bit -- as much as 200. It's not temps, it's not psu, it wasn't doing it before, now it is. What are the potential causes of core clock fluctuation and how can I fix it?
At the same clocks my Tri-X 290 out benches my Powercolor 290 by a decent margin.

If your using the 14 beta drivers, I would try going back to the 13.12 drivers. When I was using the new betas, it would not apply the power limit that I set in either AB or CCC and this would cause my card to throttle. Rolled back to the whql drivers, all is good.
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post #18139 of 43923
I'm glad AMD fixed the instant lock ups as seen on the 14.1 drivers. With said drivers, I could not run a single game on my system without instant crash as soon as the applications begins to load.
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post #18140 of 43923
Quote:
Originally Posted by pkrexer View Post

If your using the 14 beta drivers, I would try going back to the 13.12 drivers. When I was using the new betas, it would not apply the power limit that I set in either AB or CCC and this would cause my card to throttle. Rolled back to the whql drivers, all is good.
That explains a lot. I was beginning to think that I was seeing degrading already on my card due to mining redface.gif
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