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GTX 560 or HD 6870 with 475w psu?

Forum Graphic & Displays : Graphics Cards GTX 560 or HD 6870 with 475w psu?

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Pants01   02-15-2012 at 07:48:13 PM

I have a Dell studio 435t that has a 475w flextronics stock psu.
Machine came with a i7 2.6GHz, 12g RAM,GTX 260

http://www.txcesssurplus.com/servl [...] XPS/Detail

Looking at manufacturer sites they say either 450w or 500w minimum recommended psu's for the HD 6870 and the GTX 560.
I don't need to go to a 560ti to get a good performance boost so I was wondering if it's a good idea to run either of these cards with this psu or should I really just buy a new psu too. Trying to get away with not replacing it if possible.


Message edited by Pants01 on 02-15-2012 at 07:51:00 PM
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azeem40   02-15-2012 at 08:05:19 PM

6870, but I wouldn't trust that PSU.

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mubin   02-15-2012 at 08:12:35 PM

6870 require 151w and 560ti require 170w. So 6870 is the chioce, but your psu is tighten and maybe not that good.

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scannall   02-15-2012 at 08:15:27 PM

This is a good way to figure it out, without doing a lot of guessing.

http://extreme.outervision.com/psucalculatorlite.jsp

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samuelspark   02-15-2012 at 09:28:23 PM

Nope. Stock generic PSU? A good 430w can run a 6870 but...

------------------------------ i5 2500k at 4.6GHz (1.376v) Hyper 212+ ,
Gigabyte Radeon 6850 (910/1150/1.149v) ,
MSI Z68A-G43 (G3) , 4GB DDR3 1600 G.Skill ,
500GB Seagate Barracuda 7200 , OCZ Fatal1ty 550w , Antec 300 Illusion
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Pants01   02-16-2012 at 11:42:27 PM

I've seen other posts saying the flextronics psu is good so I don't know why a good 430w would run a 6870 but my 475w won't.
Either way I was just hoping I wouldn't have to get a psu. My wife has the same pc and I'll be doing the same upgrade in both, that's why I was trying to not replace the psu.

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