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Okora66

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May 1, 2015
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Hello, i have a 750 Watt gold rated psu, and using a bunch of different calculators online im planning to build a system that has a TDP of around 734 or so. How long will my power supply last? Should i upgrade? i just got it a month ago.

My planned specs would be:
Unknown 8 core FX ( I dont know because i havent been able to boot up yet until my card comes) with the Cooler Master seidon 120V
2 R9 290s in crossfire (vapor x)
A 5400RPM hard drive
Optical drive
and the fan controller in the enthoo pro
 
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Okora66

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May 1, 2015
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4,510

sadly no, because i traded my 6100 and motherboard for my brothers who said it was an 8 core, but didnt specify which one. they all have around the same TDP though as far as ive seen
 
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Zerk2012

Zerk2012

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Oct 6, 2014
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Yes all the same either 125 or 220 Watts.
The R9 290 has a TDP of 275 Watts so thats 550, 125 Watt processor, now your at 675, 50 more for the motherboard and memory, 725, fans and drive. Your going to either have shutdowns or pop the PSU in my opinion.
Under normal use like gaming you could be OK I don't think I would try to run a full system stress test.
Are you sure the motherboard even supports Xfire, your also going to need to have a good case with adequate air flow to keep the cards cool.
 
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