I have bougght most of my parts. thinking of what powersupply i need to get for teh parts  i have.

At the moment i got

geforce GTX 980 4gb VErsion evga ftw overclcok version

I7 5930k Cpu

Asus X99 -A motherboard

Gskill Tridentx 2400mhz GB ram

3tb internal drive 

MS 8.1 OS 64bit

Would 750 watt powersupply be okay or do i need more or less

Also have you guys used crucial Mx100 series SSD? If so are they good and worth getting

Holy shit that's a lot of horsepower! A 750 W should be fine unless you want to Sli up the ass

Thanks :). Wanted it to last awhile before do any minor upgrade. Sweet wanted to make sure as i do not spoil this build  as it ain't cheap. Will post pics when done.

Have you used Crucial mx100 series SSD before?

looks good so far, but ive no idea on the mx100 series ssd, i can however recommend a samsung evo 840 - http://www.newegg.com/Product/Product.aspx?Item=N82E16820147372

Very good drive for the money.

you could get away with 2 way sli pretty comfortably with 750w on gtx980, that power consumptions pretty darn low for what it is.

three way might be pushing it though.

True dat! With his awesome pc build, idk if he wanted to do like a 3 way or not but two way should be fine

I would recommend a large capacity mechanical HDD, too.
You really don't want to be wasting ssd space on large downloads or general stored files.

Perfect solution is to install your OS, the latest drivers, and all essential applications, login to gmail and the sites you frequent, get everything running just how you like it then clone your SSD image to a file on your mechanical drive, that way if ever a virus reaps havok, or your ssd randomly dies and you need to have it RMA'd, you can be back up and running from your good backup within minutes.

Sweeet just wanted to be sure as the box of the 980 said minimum 500 watts..  Sweet will have a look :).  I did some research and according to tech reviews they are about the same in performance lol. The only thing i never heard of the brand XD. In nz they are selling crucial mx100 512gb SSD for 260 bucks which is cheap for nz standards . Yea i can't wait to  put it together and test games on it . 

Noob question here. Whats a mechanical HDD? Are those like the hybrid HDD i keep seeing?

i had that in mind but i need to recover from that purchase first XD. My wallet had a heartache after that!