650w or 750w?

going to be upgrading comp shortly and adding some things into it. Right now I have a xion 600w that ive had for a while. When my build is finished I will be running a e8400 @ 4 ghz as well as 2x 8800 gts in sli, 2 120mm fans and 2 80 mm fans, a zalman 9700 cpu fan, and 5 sata hard drives. Giving a rough estimate would I be ok with the 650w? or should I shoot for the 750.

more is better

u can check here http://www.extreme.outervision.com/psucalculatorlite.jsp

A 650 will work but I'd drop that XION in a heartbeat. What is your budget?

ya this xion was a cheap buy along time ago, little over 2 yrs. Its actually lasted and only had 1 problem where the fan stopped spinning inside due to some dust. I would like to stay around 100-150 if possible, and would like a modular ps to keep it as clean as possible for air flow. A few I have been looking at are :
http://www.newegg.com/Product/Product.aspx?Item=N82E16817153039
http://www.newegg.com/Product/Product.aspx?Item=N82E16817815002
http://www.newegg.com/Product/Product.aspx?Item=N82E16817815001

I am leaning towards the xigmatek 650w as its a great price and people seem to like it, and its modular. Pretty much everything im looking for.

*sy2005 thanks for the link thats a nice site

The Xigmatek PSUs are suppose to be pretty nice. I think the main complaints I read are the fan noise at higher loads. OEM manufacturer is CWT so it's not a bad choice.

For the money I would get this
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005
even though it's not modular it's is rated for 650w @ 50c temp. Most psu's don't come close at that temp!

Kris said:

For the money I would get this
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139005
even though it's not modular it's is rated for 650w @ 50c temp. Most psu's don't come close at that temp!

Click to expand...

Kris is right, this unit is inredible. The cables can easily be bundled and tucked away into a free 5 1/4 bay. Problem solved I'd say.