Will the Ascot-ATX-S550W PSU be able to power the following:

Yeah... NO.

Not built by a reliable manufacturer. It's got about as much chance of delivering the rated 550W as it does flying away...

It would probably catch fire along the way, will have no protection and thus can wipe out the rest of your PC, and simply should be avoided.

I'd suggest one of these: http://au.pcpartpicker.com/part/xfx-power-supply-p1450sx2b9 The recommended power ratings leave a little bit of slack.
 

Jaycent15

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Aug 2, 2013
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hi

upgrading PSU is not an option im afraid.

what about if i downgrade graphics to Palit GeForce GTX650Ti BOOST OC 1006M/6108M 2GB GDDR5 2xDVI HDMI DisplayPort?
it's required is 450W.
 

Jaycent15

Honorable
Aug 2, 2013
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the PSU is doing fine now, would adding a midrange gpu really do that?