help with SLI in Radeon HD 5670!!

[orr_h]

I know the cards are old but I really need your help
I have two graphics cards They both are Radeon HD 5670 But one is GV-R567OC-1GI (rev. 2.0) 
And the other is GV-R567OC-1GI and They even look different.
new- http://www.gigabyte.com/products/product-page.aspx?pid=3542#ov
old- http://www.gigabyte.com/products/product-page.aspx?pid=3312#ov

My question is whether SLI will work between them or not???

I need an answer as soon as possible because I buy one tomorrow
Thanks to all helpers

[absic]

Hi there,

No you won't get SLI but you should get Crossfire to work OK which is the ATI version of the same thing.