PC Build PSU Help

[Mully]

I have just started ordering the components for my first PC build and so far I have:

i5 3570k
Asus P8Z77-V
Corsair Vengeance 8GB 1600Mhz CL9
EVGA GTX 670 FTW SIG2

I also plan on ordering the NZXT Switch 810 and a Seagate 1TB 7200RPM 64MB HDD.

I am undecided on the SSD and CPU cooler.

I'm also struggling to decide on a PSU.

I'm looking for one that is Fully Modular/Modular, quiet, 80+ Efficient and has NO coil whine.

Below are a few of the PSU's I have been looking at.What do you think?

http://www.cclonline.com/product/54...Power-Supply-Unit-80-PLUS-Certified-/PSU1250/

http://www.overclockers.co.uk/showp...___Power_Supplies/Seasonic/CA-027-SS&pup_c=gs

http://www.scan.co.uk/products/650w...ld-120mm-silent-fan-eps-12v-quiet-fan-atx-psu

I am also open to other suggestions.

Thank you for your time.

 

[sonicboom]

Do you have some spare change around? Ok, heads AX750, tails, seasonic x 650. Flip and choose.

 

[Garming]

Id just go with the Seasonic 650. Maybe if you are lucky, the Seasonic x 750 would go back on sale for 90.

 

[evilsofa]

Corsair AX750 vs Seasonic X-650: whichever is cheaper to you at the moment. Your system as you describe it will rarely use more than half of the X-650's output, and both PSUs are in the top 1% as far as quality goes. There's no wrong choice between the two.

Nobody, us included, can tell you if a particular motherboard-PSU-video card ensemble will or will not make coil whine that is detectable to your ears because it's random on at least four different variables. All you can do is not worry about it until you've built it because you probably won't experience it.