What power supply would be fine?

[Samson_1]

I'm planning to build a pc but uncertain about what PSU is enough to run this build as follows:
core i5-3470

ASUS H61M-K mATX LGA 1155 Socket Motherboard

Corsair Value Select 4GB (4GBx2) 1600Mhz 240-Pin DDR3 Desktop Memory

Nvidia 750Ti 2gb

 

[Dark Lord of Tech]

A high quality 400 to 450w.

 

[Samson_1]

what if build this one:
Gigabyte GA-H81M-DS2 mATX LGA 1150 Socket Motherboard

Pentium g series or core i3,i5,i7 haswells'

2x4gb 1600mhz

Nvidia 750ti

 

[Dark Lord of Tech]

Same.