First build. Need help choosing last few parts.

Hi,
I'm in the middle of gathering all the parts I need for my first ever build but I'll need your help with the last few.

What I've so far...

CPU: I5 3570K
MOBO: P8Z77-V
RAM: Corsair vengence blue LP* 8gb
SSD: Samsung 830 256gb

GPU: GTX 670 ~ haven't decided which make yet.
PSU: ???
OS: ???
Case: ???

A few Q's

1). Should I get the OEM or retail version of windows 7? I've heard that after the OEM version is installed you cannot change or replace any parts, correct? Would it be better to invest in the retail?

2). Do I need a cooler? I'lll overclock whenever my PC can't run games at stock speeds but hopefully that won't be for a couple years. Should I get a fan now or wait? Which CPU fan would you recommend? Watercooling maybe?

3). I think a 650w PSU will be enough for overclocking, right? How's this? ~ http://www.amazon.co.uk/gp/product/B004O0P9TO/ref=ox_sc_act_title_1?ie=UTF8&smid=A3P5ROKL5A1OLE ~ It seems like a quality PSU but some have complained about the noise... Maybe a modular Seasonic would be a better choice?

4). Fractal design define R4. I really like its look but I'm a bit hesitant because it's a slience oriented case and I'm not sure if it can fit a decent CPU fan or water cooling setup. Does anyone know if this is possible?

Thanks in advance guys :D
8 answers Last reply
More about first build choosing parts
  1. With OEM, you can change any part EXCEPT the motherboard.
    I would get a cooler now. The Hyper 212+ is $15 at newegg.

    http://slickdeals.net/f/5351258-COOLER-MASTER-Hyper-212-Plus-15-49-AR-FS-YMMV-newegg
  2. I agree about the cooler. I recommend this power supply...http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&name=Power-Supplies. In my opinion they make the best psus on the market.
  3. obsama1 said:
    With OEM, you can change any part EXCEPT the motherboard.
    I would get a cooler now. The Hyper 212+ is $15 at newegg.

    http://slickdeals.net/f/5351258-COOLER-MASTER-Hyper-212-Plus-15-49-AR-FS-YMMV-newegg


    Right, and I can change them as many times as I want?

    Hyper 212 costs about £25 over here, considering the reviews I take it's the best bang for your buck, yeah?
  4. Yup, switch the RAM out, CPU, etc. But, if you get a new mobo, you'll need a new copy.
  5. maestro0428 said:
    I agree about the cooler. I recommend this power supply...http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095&name=Power-Supplies. In my opinion they make the best psus on the market.


    Seems pretty good. Is that fully or semi-modular?
  6. Looks like it's semi-modular.
  7. obsama1 said:
    Looks like it's semi-modular.


    Thanks for clearing that up. Most cases have plenty of cable management options so its not like I'm going to have a mess of wires in there even if it isn't modular right?
  8. Yup. If you get a good case, cable management will be no problem.
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