If your using a mini itx tower, then I suppose you have somewhat limited options, I would go with at least 250 if not 300 watts, depending on the hardware your running. its always better to have to much power then not enough. something like this
ought to do the trick, provided your not loading up to much on other hardware like high end video cards.
Side note, I notice youve started several topics, Im assuming its all for one computer, It would be easier for everyone if its all for one computer to only have one topic, along the lines of Im trying to build a new ITX computer, what do i need, and list all your questions at once in that topic, that way a user can look at it and say hey I know what hes trying to do, and be able to make better suggestions. Like for example this post, I know your trying to build a computer with mini ITX capabilities because Ive read your other posts, but say, John Doe gets on and sees this post, has no clue that your trying to build a mini ITX computer, its not common most people go for the full size, could recomend a full size power supply that won't fit in your mini-ITX tower. Anyway, just some suggestions.
Primary system: Motherboard: ASUS M4A89GTD PRO/USB3, Processor: AMD Phenom II x4 945, Memory: 16 gigs of Patriot G2 DDR3 1600, Video: AMD Sapphire Nitro R9 380, Storage: 1 WD 500 gig HD, 1 Hitachi 500 gig HD, and Power supply: Coolermaster 750 watt, OS: Windows 10 64 bit.
Media Center: Motherboard: Gigabyte mp61p-S3, Processor: AMD Athlon 64 x2 6000+, Memory: 6 gigs Patriot DDR2 800, Video: Gigabyte GeForce GT730, Storage: 500 gig Hitachi, PSU: Seasonic M1211 620W full modular, OS: Windows 10.
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