What is the clock speed on twin frozer 7850?

[computernewb]

hi. im looking at the 7850's on newegg and all of them have the clock speed stated except the twin frozer
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&DEPA=0&Order=BESTMATCH&N=100006662&isNodeId=1&Description=hd+7850&x=0&y=0

I was wondering if anyone knew what the clock speeds are. Also, for a graphics card, which clock speed is more important for gaming? core clock or effective memory clock?

thanks!

 

[bavman]

http://www.msi.com/product/vga/R7850-Twin-Frozr-2GD5-OC.html

900mhz, google is your friend

 

[computernewb]

ok so all twin frozrs are OC?