Is 300watts or 500watt enough?

[techblu]

I'm building an home theater pc with theses components:
Intel BOXDH55TC LGA 1156 Intel H55 HDMI Micro ATX Intel Motherboard
Intel Core i3-530 Clarkdale 2.93GHz 4MB L3 Cache LGA 1156
A-DATA 4GB (2 x 2GB)DDR3 SDRAM DDR3 1333 (PC3 10666)
Western Digital Caviar Blue WD6400AAKS 640GB 7200 RPM 16MB
windows 7 Home Premium

The basic function is recording tv shows using the upcoming Ceton Cablecard tuner.

There are two cases I like the:
APEVIA Black / Silver SECC Steel / Aluminum X-MASTER-AL/500 ATX Media Center this has an ATX 12v 500w psu.

The other case:IN WIN IW-BK644.SE Black 0.6mm SECC Steel MicroATX Mini Tower Computer Case has an SFX 12v 300w psu.

Is the SFX 300w psu enough or should I go with the ATX 500w psu? Also are the MicroATX power supplies the same as an SFX power supplies?

thank you.

 

[Computerrock1]

For your build, your computer will probably never surpass 190w. 300 watts will provide ample power. I personally don't like APEVIA cases, they are flash and little bang. There fans on the other hand are superb. (just saying)

 

[shovenose]

ok well neither apevia nor inwin are good psus. i would recommend the corsair 400cx psu.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008

 

[Computerrock1]

I agree with him...

 

[shovenose]

me? yay!!!! someone agrees with me lol!
if u wanna be cheap you should get this:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033&Tpk=antec%20380d
its still a decent psu but its worth the corsair, besides the corsair is on sale so it wouldnt be much more expensive!

 

[Henry Chinaski]

Take a look at the Antec NSK1380-EC MicroATX Cube case.

http://www.youtube.com/watch?v=gAvdOd_VBnQ

It has a quality 350W PSU that performs very well.