The milestone is important in that server chips sell for more than desktop ones. An increase in sales of Opteron servers also gives AMD an opportunity to sell chips to manufacturers of business desktops and servers. To date, the vast majority of AMD desktop and notebook chips have gone into consumer computers. Though prices of chips sold to these two markets are often similar, the business market remains larger than the consumer market.
AMD Passes 11% Server Marketshare
Source: CNet News.com
AMD hit a big milestone recently according to this News.com article that shows AMD has hit 11.2% of the server marketshare.