UnlimitedBanana :
My power supply is the RS-460-PSAP-J3, NOT the RS-460-PSA*R*-J3. Total wattage of the 12V rails is 36A not 27. the maximum output is 432W total (not the 12V rails I failed there) but 432W is good enough for a GTS450 which according to this link:
http://forum-en.msi.com/faq/article/power-requirements-for-graphics-cards only needs a total of 24A, my PSU has 36. It's a decent PSU for the money considering the *quality* 500W were around 3X it's price. I am not a bank and for 30 euros this was the BEST possible PSU I could get from the cheapest shop here.
The PSA*P* is simply the 220 volt version of the PSA*R*
They have the SAME wattage and current ratings. I know that the label says that each 12V rail can supply 18 amps. That DOESN'T mean that it will supply a total of 36 amps on the 12 volt rails. the label says that it can only supply 324 watts TOTAL over BOTH 12 volt rails. 324 watts/ 12 volts = 27 amps
NOT 36. It is NOT the total wattage of a PSU that is important, but how many amps are available on the 12V rails, since the 12 volt rails supply power to most(if not all) of the components in a modern PC. I am not here to debate what you can or can't afford. I am simply stating that the CM ELITE 460 doesn't deliver what it claims and is therefor a bad choice for PSU if you require a 460W PSU.
According to the NVIDIA website:
http://www.nvidia.com/object/product-geforce-gts-450-us.html
they recommend a MINIMUM 400 Watt PSU for use with the GTS450.
Since the CM ELITE 460 is just barely a 400 watt PSU, You may be ok to use it with your build. Be aware that you would be running at the MAX for that PSU and you would therefore have little to NO headroom for overclocking or upgrading your machine.
You pays your money and you takes your chances.
At any rate, I wish you the best of luck with your build.