New Mini-ITX E350 HTPC Recommended PSU Wattage?

[bradlays]

tl;dr: How many watts should this builds PSU be? Came with a 90W DC Power Supply.

I have tried searching for a calculator that has the AMD E350 APU on it but I have yet to find one. Can anyone estimate how many watts the following mini-itx builds PSU will need? The motherboard came with a 90W DC power brick that it makes me use as the power supply, but I don't know if that will be sufficient.

Zotac Fusion350-b-u Mini-ITX Wireless Motherboard / AMD E350 APU Combo
http://www.zotacusa.com/zotac-fusion-itx-wifi-fusion350-b-u.html

8GB (2x4gb) DDR3 1066Mhz SODIMM RAM
http://www.officemax.com/technology/drives-memory-storage/pc-memory/notebook-memory/product-prod3960248?cm_mmc=Googlepla-_-Technology-_-Drives%20and%20Memory%20and%20Storage-_-PC%20Memory&&ci_src=17588969&ci_sku=23316859

2TB Seagate Barracuda 7200RPM SATA HDD
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148834&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA&gclid=CKLajsuk3bQCFSemPAodXRsA3g

Kingston SSDNow V300 Series SV300S37A/120G 2.5" 120GB SATA III Internal Solid State Drive
http://www.newegg.com/Product/Product.aspx?Item=N82E16820721107

Future Additions:

2TB Seagate Barracuda 7200RPM SATA HDD
http://www.newegg.com/Product/Product.aspx?Item=N82E16822148834&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA&gclid=CKLajsuk3bQCFSemPAodXRsA3g

TV Tuner Card (Need to research them first)

Please feel free to rate the build also, all I purchased was the case and the rest I got from a points site so my options were limited.

 

[simon12]

The board RAM & CPU will use max 10W an SSD could use max 6W most around 3W the HDD up to 7W this is all at maximum load total 25W.

 

[rwpritchett]

My HTPC uses an E350. I run it on a 65W PSU. No problems there.