Should I overclock if my graphics card meets it mininum requirement of power watts?

[Dan2rock4]

My R9 270x is really good, but I wanna kick it up a notch. However, my powersupply is just enough for the wattage required.

 

[quandao93]

what psu do you have?

 

[Beezy]

you can try but it probably wont be stable or worth it.

 

[Dan2rock4]

you can try but it probably wont be stable or worth it.

Explain?