R9 280X PSU Requirement

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TheKerangMan

TheKerangMan

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The new Sapphire R9 280X required 750W as stated thru their specs..but someone said true power Seasonic 620W will be good enough for the GPU..well which one is efficient and real answer..? please help me,i'm confused..Thanks in advance..
 
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larkspur
The 750w requirement would be for two cards in CrossFire. I am completely sure that the Seasonic 620w is plenty for a single 280x, no worries at all.
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TheKerangMan

TheKerangMan

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but the specs said 1000W needed for crossfire..i'm confused..
 
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runnyriver

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It looks to me that card manufactures are fine over-estimating the PSU required. Why they don't just state the full load watt requirement for the card only is beyond me. I'm in the same boat, looking to get a 280x now and crossfire later. I'm going with a 750w psu. I checked out a few different power supply websites, and as of now I'm confident in my purchase. I'm by no means an expert.. so I'd recommend you get a 1200w PSU so you can't blame me for recommending too low a wattage.

 
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AgentDirtySanchez

AgentDirtySanchez

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I would imagine they do it that way to cover themselves for the shortcomings of low end PSUs. An 850W 80+Bronze and 850W 80+Platinum are entirely different animals. The platinum will last longer at peak load, and is far more likely just to shut down if it's overloaded, and will probably die without frying other hardware.

I'm getting a pair of MSI 280Xs and will probably stick with my 850W 80+ Gold. They say that each 280X draws 250W max under full load. You have to conservatively figure the average CPU draws 125-150W, MB 60-75W, BR-DVD 30-45W, HDDs are 10-20W each, estimate another 25W for fans and pretty lights and whatnot, and that's what you should be looking at for your total power needs. For a more exact power consumption figure you'll have to research the specs for each of your individual components.

I've always gone the way of a smaller high quality PSUs for the above reason coupled with other minor annoyances like loud fans and coil squeal. Higher end PSUs are also good for air cooled rigs as they often have modular cables that take up less space, and allow for better airflow in the case.



 
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ripjaw_0320

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HIS R9 280x turbo boost edition
GPU TDP 245watts full load @power hungry system

http://www.guru3d.com/articles_pages/his_radeon_r9_280x_iceq_x2_turbo_review,8.html

guru3d also stated a recommendation of GENERIC PSU is 550w

HIS 280x turbo boost
TDP 337w at stock and 437w at OC
@this full system test http://www.overclockers.com/his-r9-280x-ipower-iceq-x2-turbo-review

Sapphire R9 280x toxic edition
System Draw
@METRO= 339w
@Furmark=469
http://www.anandtech.com/show/7406/the-sapphire-r9-280x-toxic-review/4

Final thoughts:
500w quality psu like seasonic corsair antec xfx etc is enough to run a single r9 280x if you dont have plan in future for your system, and remember that the amp of your +12v rail is also important.
 
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cederwood

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well, it can max. use 300w, because it has 2 times 6+2 pcie cables wich each diliffer max 150w, so for crossfire i think 750 watt will get the job done, if you want to be totally save you can get 800-850 watt
 
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DocMengueche

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I had a 600w power supply and guess what, it got completely fried. I have to buy a gaming 750w power supply to be able to play.
This are my specs:
fx 8350
gigabyte motherboard - GA-78LMT-S2P
8gb ram
generic dvd writer
ASUS R9 280x
1tb HDD
Gaming case with 3 Fans.
600watts power supply

Not any kind of overclock at all.
Power supply and motherboard got utterly FRIED after 2 hours playing.

I applied the warranty but they told me I need a 750watts Power Supply to be able to make it work without risking my pc to fail again.

So think about taking forum advices before actually risking your investment.
 
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skylite88

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I am running a R9 280x tri-x and using a corsair cx750m psu now my display driver stopped responding every few mins in game, I had try troubleshooting everything I can do to see what's the problem and to change a psu is my last result and after putting my friend psu in my system which is a Ax860i my PC can play the game 2 - 3 hours without the display driver stop responding I think it's either my psu faulty or it can't meet the standard. Any advice??
 
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tmboyz

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Mine is a R9 280x toxic running on a Seasonic 620 bronze along with the i7-4790k OC to 4600. Games like BF4 maxed out on a 24" 1900x1200, for something like an hour without a problem. A good quality 620 is fine. I think the total watt requirement for a R9 280x is 300 watts on the two 8 pins connectors. And how much for a oced cpu 80w? 100? You’re still left with plenty of juice. But if you plan to crossfire, you’re better off with 1000w.
 
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TheKerangMan

TheKerangMan

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i wonder how if an FX 8350 was the cpu there..will it be running fine? the TDP was 125W..!
 
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tmboyz

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how many watts is yours right now? 620 I think? its fine if you are doing only one thing at a time (the FX considered). Take me, I always run one single process at any one time. If you are running a heavy game and handbrake working in the background with additional twenty browsers open; you get into problems with anything less than 750

 
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Gmr_Girl

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For me, I would want to "play it safe" as they say and buy a bigger PSU than actually needed - so, say for example you're like me and want to get Sapphire's R9 TOXIC 280X, which for all intents and purposes - plus noted in seemingly every review I've read about that card in particular - draws a bit more power than a typical R9 280x. Sapphire recommends a 750 watt PSU to run that card, a 1000w if planning to run two of them via Crossfire. I realize they're probably just putting it out there as a way to CTA (Cover Their Ass) but why take a risk? I sure as hell don't want to, especially for that kind of money, so that's why I'm going to get a Seasonic X850 just to "play it safe." :)
 
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tmboyz

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850! that's really safe, even on crossfire, SLI or whatever.

 
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DSN

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I plugged a XFX R9 280X on a Corsair TX 650W (the enthusiast series), after I booted it started smelling really bad and I turned it off... I switched everything off right away, and nothing fried, but I hadn't had the courage to try it again. Just bought a Corsair AX 850W.

I'd go with a 750W PSU as the manufacturer says.
 
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tmboyz

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****! you people worry me now, mine is a seasonic 620 bronze, running a i7-4790k OC to 4400, and a R9 280x toxic. Just these two components will take up 550w easily. This is a new setup, I don't want to run to the store (just walking distance) for a 750w, mainly because I hate opening the case and burrow around like a plumber. Hmmm...i'll wait and see how it goes. Or just walk down to the store....


[Mod edit - - bad language removed]
 
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