PC problem that makes no sense

[Dark_Desires]

So i got a new pc awhile ago its great but i got 1 problem i cant play most modern games like skyrim and warhammer 40k space marine in anything but low settings.http://acer.com.au/ac/en/AU/content/model/PT.SGK02.022
Now in the link it shows u my pc its got 1 problem the graf card.It says im running a hd6450 on a 220 w psu when check the site for the card it says it needs a 400 w.I dont understand this at all.Now are there any better cards i can get or should i go buy new psu and graf card.

[anonymous53]

Go get a new PSU ~600-750 watt and a new graphics card ~6850 but from there your bottleneck will be your processor

[Dark_Desires]

yeah but did u see my pc and its size its slim so what kinda psu and card am i going to be able to fit

[anonymous53]

Normal ATX power supply usually will fit, get a low profile graphics card

[Dark_Desires]

ok but i still have the quez of why my pc can run my current card when it shouldnt be able to

[anonymous53]

Recommended power supply isn't "required"

[Commander Thor]

Recommended power supply isn't "required"

This.
The recommended power supply on a video card is taking into account a fairly powerful CPU, as well as other internal components sucking up a large amount of power.
So while it does say 400W, it performs more than fine on 220W.

[Hajara22]

most things are that way. like pluging something into the wall. it canbe 110 or 220 cause a power outlet can push 220 steady but if you only plug in something pulling less then less is what it will push...

[Dark_Desires]

Well i kinda figured it was something like that.Thanks for the answers guys

[AutoPlay]

A PSU can output more than its stated wattage but it can shorten the lifespan on the hardware. Have you notived that some of your games and applications have been running quite slow or your PC has crashed every now and again ?