6970 crossfire + overclocking PSU question

[apamilo]

Hi guys i am planning to get a second 6970 to crossfire aswel as OC my cpu to about 4.7ghz while also installing a new CPU cooler which is this one:

http://www.coolermaster.com/product.php?product_id=6603

My question is will this PSU be able to support this setup?

http://www.pccasegear.com/index.php?main_page=product_info&products_id=15350

I was told by my local IT joint that it will be fine but this guy tends to say some silly things sometimes so i wanted to double check with you guys. Also my current pc specs if you need them are:

i5 2500k @ 3.2ghz
asus CUII HD6970 2G stock
8gb g skill ripjaw ram
1tb samsung spinpoint hardrive
Gigabyte p67A motherboard

 

[bystander]

Try using this PSU calculator: http://extreme.outervision.com/psucalculatorlite.jsp

When I fill it out with my OC and two 6950's unlocked and OC'ed to 6970 levels, I get a min requirement of 750watts.

 

[apamilo]

Thank you for the reply i got a minimum of 725 but i must have filled one of the sections out wrong. do you mind me asking what PSU you are using? it reccomends a 770 to me but i only really have the budget to buy the PSU i mentioned earlier.

 

[bystander]

I have an Antec 850. The specific model I don't recall. It is 80 gold rated.

 

[apamilo]

Best answer selected by apamilo.

 

[Mousemonkey]

This topic has been closed by Mousemonkey