If ATI motherboard southbridge uses SB850, Samsung HDD might need to update firmware for resolve compatible issue.
Please refer Samsung website for detail information and firmware update.
http://www.samsung.com/global/business/hdd/faqView.do?b2b_bbs_msg_id=308
You can easily access our extensive FAQ section, which is designed to swiftly address common queries and promptly resolve any issues you might encounter.