If I buy two of R9 290x 8GB video cards, how much total psu power would I need?
2011775
Well, I've seen power draw benchmarks of 2 Crossfire 290xs range from around 600-750. So I would would say a PSU thats a tad over 1000 W total. Don't cheap out on your PSU either, get something with a reputable OEM. Would hate to see your cards go up in smoke.
603131
The TDP of the card is advertised as 150W, although it should be a little lower considering it can still be overclocked within it's physical power input restrictions (75W through pci-E slot + 75W from the 6-pin connector). But yeah, 150W is a safe estimate. As to the wattage required to run a system (i.e. power supply requirement) people will throw random numbers at you like 500W PSU or better, but the truth is that it all depends on the hardware you are running. I suggest you do some google search for a power calculator and do your own math and see what kind of PSU you're going to need.
1752055
Obviously if the packaging of the box says the GPU needed a specific amount of watts in order to perform and execute the demands of the owner then of course! The R9 290X is quite consuming in power so I suggest you get a 800 or 850 watt power supply in order for it to be sufficient enough so that you have no worries about power failures or any unwanted damages such as a dead GPU due to the causes of power failures. Anyways, I hope this answer helped you make the right choice. However, I also suggest that you get yourself the modular version in order to help in keeping the other components of the computer to be efficiently cooled and for the other components to last longer. Thanks for reading! Obviously if the packaging of the box says the GPU needed a specific amount of watts in order to perform and execute the demands of the owner then of course! The R9 290X is quite consuming in power so I suggest you get a 800 or 850 watt power supply in order for it to be sufficient enough so that you have no worries about power failures or any unwanted damages such as a dead GPU due to the causes of power failures. Anyways, I hope this answer helped you make the right choice. However, I also suggest that you get yourself the modular version in order to help in keeping the other components... » Read More Obviously if the packaging of the box says the GPU needed a specific amount of watts in order to perform and execute the demands of the owner then of course! The R9 290X is quite consuming in power so I suggest you get a 800 or 850 watt power supply in order for it to be sufficient enough so that you have no worries about power failures or any unwanted damages such as a dead GPU due to the causes of power failures. Anyways, I hope this answer helped you make the right choice. However, I also suggest that you get yourself the modular version in order to help in keeping the other components of the computer to be efficiently cooled and for the other components to last longer. Thanks for reading! « Show Less
1284703
Bear in mind, the PSU they "require" isn't about what the card needs; it's an assumption about the overall needs of computers the manufacturer figures might be needed. This card requires no power other than the PCI express lane --- that only supplies 75 watts. So this thing only needs 75 watts or less for itself.
1817423
Will it support it; Yes. Also under full PC load you will be around 500-550w (the cards alone pull 400w together). This will put you right in the efficiency "sweet spot" (92% at 120v). Looking at the graph you can see efficiency starts to decline over 50% psu load. Your idle load will drop below the efficiency "sweet spot" but only by 2%.
2114982
That depends on the graphic card you will be using.650 WATT FOR SINGLE CARD. 2 GRAPHIC CARDS 750 WATT. I RUN A 850 WATT FOR MY RIG POWER TO UPGRADE.
1432266
I believe the recommended minimum power supply for two GTX 780 cards is 800W. From personal experience though, it is always better to have a power supply that exceeds the recommended minimum. I think your best bet would be to go with the 1000W.
274277
I'm using 850W one for cross fire. I think 450W would be fine for single card, but it depends on your other hardwares.
1317258
It is recommended that you use a 400 watt power supply by AMD, but in reality all this is for is to save themselves from hearing about defective cards from users that may have cheap or low end power supplies. I have one of these running in my secondary rigs with a 300 watt power supply without any issues what so ever. Though 300 Watts is as low as I would go.
1142962
According to the manufacturer this card needs 550W:http://www.gigabyte.us/products/product-page.aspx?pid=4102#sp , Power requirement = 550 W
2159532
The 290x is a internal xfire card. And for the diff on ur card to the R9 id think alot 75%+
246891
No, you would need something more like the Corsair RM850 to sufficiently power this dual GPU card.
1848142
Oh with absolute ease, Yes! The 970 card itself draws about 135W, with a max margin consideration of about 250W. You could run two of those cards with little too no problem at all, depending on your other specs. 1 will be an easy job for the PSU.
791388
Hi Jordan. A safe bet, in my opinion, would be a 600-650 watt rating on your power supply unit (PSU). That should handle an overclocked GPU, plus the needs of any CPU you might have installed, along with the usual memory configurations (8 to 16 GB), an optical drive, and several hard drives (including a mix of solid state and conventional drives). You should have power to spare. However, if you think you might want to run a dual-SLI card configuration, then I would go with an 850-watt PSU like those available from Corsair and other reputable vendors. A second card will draw roughly 170-200 watts by itself under load, BTW. Hope this helps.
144513
You will need multiple power supplies on two home power circuits. Most home circuits cannot handle one massive PS (1800+ watts) for 6 cards. Figure 300 watts per card x the number of cards (when mining). Most suggest a 750+ PS with at least a 60 amp 12 volt rail to support two cards running non-stop. If you want to support more than two cards per PS, then choose a 1K or above PS for the 290(x) but I wouldn't recommend &gt;3 cards for a 1200 watt PS. To use multiple PS with one mining rig use a PS splicer (sold on Amazon) or use g00gle and search for "using multiple PS in one computer". There are free methods to start up PS without an adapter.
1209820
Absolutely. If you're planning on going CrossFire, I'd recommend getting the 800w, but this will run one GPU without issue.
443357
Too late for you know obviously being a month later after question but in case anyone reads this deciding as well. Irregardless of the wattage, you need 30 amps or more. If you get a psu with a solid single rail all you need is 30 because all these video cards give an estimate assuming the amps are spread out on 2 or more separate 12v rails. The guy with the SFX 450W is actually more than enough because it contains a single rail with 36 amps. Don't listen to the people who say you need 650 amps, that's ridiculous unless you plan on doing sli.