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[Official] AMD R9 290X / 290 Owners Club - Page 1312

post #13111 of 43907
Quote:
Originally Posted by bond32 View Post

Why though? You're idea of an "overload" psu is weird. A psu rated for 700 watts supplying 600 watts only differs from a psu rated for 800 watts pulling 600 watts by lower power bills. If I had a system that pulled 1000 watts, I would buy a 1000 watt psu personally... It makes no difference as long as you purchase a quality psu.

The following is the basic principal of most electronic devices. I'm quite certain that it also applies to Computer power supplies. Running any power supply at 100% capacity is always a bad idea. The closer you run it to that capacity the more ware and tear it takes. A power supply will only pull as much as the draw so a more capable PS running at 60% should not pull that much more than one running at 100%

I guess it boils down to how the Manufacture rates the power supplies. If they rate it at absolute max then that is bad. If they rate it at constant draw capabilities, then purchasing the exact amount should be fine.
Edited by esqueue - 1/4/14 at 12:41pm
post #13112 of 43907
Quote:
Originally Posted by bond32 View Post

Why though? You're idea of an "overload" psu is weird. A psu rated for 700 watts supplying 600 watts only differs from a psu rated for 800 watts pulling 600 watts by lower power bills. If I had a system that pulled 1000 watts, I would buy a 1000 watt psu personally... It makes no difference as long as you purchase a quality psu.


even quality PSU degrades, if you are pulling 1000Watts and you bought a "just enough" 1000watts PSU, over time that PSU will have hard time supplying that 1000watts needed specially if its constantly putting out its maximum rated power. I always get a headroom of atleast 100watts so that the PSU doesn't have to always work its ass off 100% all the time, plus the fact that in case you add something else in the future you won't have to worry about upgrading your PSU.



I got an overkill Seasonic X1250 (1250watts) PSU for my system that contains a FX8350@5Ghz+single 290X (w/ all the other stuff like watercooling) in my system. Not because I want that MUCH of a headroom, but because I bought it for 140bucks (retail is 290bucks on this PSU), the huge headroom is just a bonus and its a quality PSU and another bonus is if I decided to add another 290X, or maybe 2 more 290X wouldn't have to worry about it.. right now with 8350 @ 5Ghz and 290X at my daily clocks I am barely using 654watts under load (furmark+cinebench), and if reviews are right a stock 290X adds up around 250ish-300ishwatts? so I believe I can add 2 more 290X without worries.
Edited by Sazz - 1/4/14 at 12:42pm
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post #13113 of 43907
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post #13114 of 43907
Thread Starter 
Quote:
Originally Posted by binormalkilla View Post

I finally got everything leak tested the other night, but I haven't been able to test it out because of work. Still waiting on my RIVBE block to arrive from EK, but in the meantime I'm going to see how these load temps are... Warning: Spoiler! (Click to show)

http://www.techpowerup.com/gpuz/9edym/

Congrats - added thumb.gifSnorkle.gif

Quote:
Originally Posted by Zenophobe View Post


Warning: Spoiler! (Click to show)


Uploaded with ImageShack.us

Purchased 12/21/2013

Congrats - added thumb.gif

Quote:
Originally Posted by dspacek View Post

Add me to this club please;-) On the air I was able to reach this OC with TRIXX and without touching voltage. Next week it will get under water with this block http://www.alphacool.cz/produkt/Watercool_Heatkiller_GPU-X3_AMD_R9-290X.html
Then I try extreme OC with AB
So how can I set higher voltage of RAM with AB? Im not able to set it frown.gif Only AUX!

PS: ASIC is 71,4 %
Warning: Spoiler! (Click to show)


Congrats - added thumb.gif Like to see it under water, update us. smile.gif
     
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post #13115 of 43907
Quote:
Originally Posted by shilka View Post

I am just going to leave this here

http://www.overclock.net/t/872013/50-load-myth
http://www.overclock.net/t/711542/on-efficiency

Thanks for that.

Now lets talk about mining a bit, if you have 1000W psu, and you pull only 700W, the 12v rail will degrade much slower then if you run it @900W, this is proven by many miners by now. Also you can't have psu which rail wont degrade overtime, that's not possible. So yea, if you push your psu often its still decent choice to go for like 20% more then you need, its not necessary but its better option imho, because the price are very close.

The threads you linked, although correct on many points, it doesn't cover extreme draw usage scenarios. For cusual gamer its spot on, but for crazy runs and mining not so sure.
Edited by psyside - 1/4/14 at 12:51pm
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post #13116 of 43907
Quote:
Originally Posted by Forceman View Post

Unless you are planning to use the PT3 (or some other modded BIOS), 700W is plenty for a single card. I've yet to see more than 450W from the wall and I've run mine as high as +200mV with Trixx.

So what is your OC for the R9-290X now? Are you water cooled? Im stable on 1120Mhz core and 1380Mhz RAM on air. I hope I can reach around 1250-1300Mhz core and 1700Mhz RAM(Hynix) on water as my HD7950 was able, but I have locked core frown.gif
post #13117 of 43907
Quote:
Originally Posted by dspacek View Post

So what is your OC for the R9-290X now? Are you water cooled? Im stable on 1120Mhz core and 1380Mhz RAM. I hope I can reach around 1250-1300Mhz core and 1700Mhz RAM(Hynix) as my HD7950 was able, but I have locked core frown.gif

I advise staying at or below 100mv if you want to run an OC like that on the stock air. 200mv should be used sparingly, as in, just for benching.
post #13118 of 43907
Quote:
Originally Posted by bond32 View Post

Why though? You're idea of an "overload" psu is weird. A psu rated for 700 watts supplying 600 watts only differs from a psu rated for 800 watts pulling 600 watts by lower power bills. If I had a system that pulled 1000 watts, I would buy a 1000 watt psu personally... It makes no difference as long as you purchase a quality psu.
Quote:
Originally Posted by darkelixa View Post

I have a sapphire r9 290 that runs fine on my 750w psu

Have to agree here, people have serious misconception about wattage and how much 1000W psu really is . 1kW is a serious business power and puny little PC is nothing for it. It's just marketing and/or bad PSU. I still remember the days in an IT retailer when we ordered container of PSUs from one of the well known manufacturers and we were asked, clearly as it was perfectly normal, how much wattage should be written on the PSU sticker.

So as you said even 600W will run R9 series just fine, as long as its quality PSU.
Edited by sun100 - 1/4/14 at 12:57pm
post #13119 of 43907
Quote:
Originally Posted by Jack Mac View Post

I advise staying at or below 100mv if you want to run an OC like that on the stock air. 200mv should be used sparingly, as in, just for benching.

200mV is no problem. With HD7950 which was stock at 1.1V I was able to manage all day long 1.3V with no problems with almost 1300Mhz.wink.gif
post #13120 of 43907
Quote:
Originally Posted by dspacek View Post

So what is your OC for the R9-290X now? Are you water cooled? Im stable on 1120Mhz core and 1380Mhz RAM on air. I hope I can reach around 1250-1300Mhz core and 1700Mhz RAM(Hynix) on water as my HD7950 was able, but I have locked core frown.gif

Its not going to happen. Be lucky to even get 1.2GHz.
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