From Karachi AFAIK. Why don't you order and choose the pick from store option. Check the phone while you're in the store to confirm if its D820/D821 and while ordering leave a note saying, D821 model required or something.
awrite thnx dude.... and one more question my current board is intel dh61ww.... Do you think i should upgrade it to Gigabyte or Asus... i was thinking Gigabyte H77 ... I've heard intel mobo's are not too good.. is it true? i thought they were known for their durability