How many watts will my psu need to hold to run my computer build?

I don't know what size PSU I will need, if somebody can help me I would appreciate it. I am going to use:

Intel Pentium Dual-Core Processor G860 3.0 GHz 3 MB Cache LGA 1155 - BX80623G860

Mother Board-
Intel Boxed Desktop Board BOXDZ68DB Media Series Socket LGA1155 ATX Motherboard

Patriot Signature 4GB (1 x 4GB) DDR3 (240-Pin SDRAM) DDR3 1333 (PC3 10600) Universal Desktop Memory

AeroCool Gaming Mid Tower Cases StrikeX-One Black/Red

Seagate Barracuda 7200 1.5 TB 7200RPM SATA 3Gb/s 32MB Cache 3.5 Inch Internal Hard Drive ST31500341AS-Bare Drive

Gigabyte 210 DDR3-1GB DVI/D-SUB/HDMI LP Graphics Cards GV-N210D3-1GI Rev5.0

I don't want to mess up my power supply. I don't really have a budget by I am trying to keep it reasonably cheap.
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More about watts psu hold run computer build
  1. Best answer
    A good 250W would be plenty; that's a really light build.
  2. Someone Somewhere said:
    A good 250W would be plenty; that's a really light build.

    Thanks for you're help!!!
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