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Started by pipper47 | | 6 answers
is 550W enough for FX-8350 & GTX 970 OC ?
Hello guys,

I am planning to buy a EVGA GeForce GTX970 Superclocked.

My first question is: Will a 550W power supply be enough (rig below)? I know according to given TDP it will teoretically be enough, but as I read some tests, the maximum power consumption was way above the given datas... so will it be really enough?

Rig:
CPU- AMD FX-8350
GPU- EVGA GeForce GTX970 Superclocked ??? (Currently Radeon HD 7850 2GB OC)
PSU- OCZ ZT 550W
Motherboard - GIGABYTE 990XA-UD3
RAM - 2x4GB ... planning to plug in another 2 RAMs
HDD - 3,5" 7200RPM 1TB
SSD- Intel 120GB
Case Vent - 12cm
3 USB devices plugged in
1 DVD drive

Second question is: I have experienced 2-3 times while I was playing a games crashes.... Suddenly the screen just went black, but the audio was still playing....I had to turn off the power supply with a button and then switch it on to solve it... no other action had a reaction. So the question is: was that because of insuficient power supply or more likely a GPU problem ?

Thanks in advance
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October 17, 2014 3:07:11 AM

My GTX 970 (by Asus) just came today... I ran an OCCT test to be sure the power supply will handle it. I ran it for a couple of minutes and everything seems to work fine... but as I looked on a graphs generated after the test., there is this graph that makes me think.... http://s30.postimg.org/8uuquhjo1/2014_10_17_11h58_Frequ... ... the max frequency is just 540Mhz as it should be 1 114 MHz .... anyone know why is that?
October 15, 2014 10:35:36 AM

Jdogz427 said:
A 550 watt is good enough, a linus tech tips video that I recently saw showed a 4 way sli 980 setup using a total system draw of 650-700watts. so your single should be just fine with 550. http://www.newegg.com/Product/Product.aspx?Item=N82E168... I recommend this psu. tier one on the psu list, it is gold rated, and only $90 US. other options are listed here on the PSU tier http://www.tomshardware.com/forum/id-1804779/power-supp...


hmm my PSU is not listed in there, but i googled another tier list and its among the second highest PSUs... so I think I will try to run it with my actual PSU, I dont want to spend additional money on another one... hopefully there will be no problem, but I appreciate your help :) 

Best solution chosen by pipper47

October 13, 2014 2:22:18 PM

A 550 watt is good enough, a linus tech tips video that I recently saw showed a 4 way sli 980 setup using a total system draw of 650-700watts. so your single should be just fine with 550. http://www.newegg.com/Product/Product.aspx?Item=N82E168... I recommend this psu. tier one on the psu list, it is gold rated, and only $90 US. other options are listed here on the PSU tier http://www.tomshardware.com/forum/id-1804779/power-supp...
October 10, 2014 1:42:24 AM

SR-71 Blackbird said:
It's enough with a quality 550w but that one isn't the greatest power supply.


So your advice is to uprage a power supply also? ... and what do you think about the second problem I am having? Thank you.
a c 2488 ) Power supply
a c 928 U Graphics card
October 9, 2014 10:17:49 AM

It's enough with a quality 550w but that one isn't the greatest power supply.

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