▁low - per formance ▁product ▁for ▁ 3 D ▁acceleration . ▁ ▁Si S ▁ 5 4 0 ▁( S part an ) ▁integr ates ▁Si S ▁ 3 0 0 ▁graphics ▁controller . ▁ ▁Socket ▁ 3 7 0 , ▁S lot ▁ 1 ▁ ▁Si S ▁ 6 0 0 / Si S ▁ 5 5 9 5 ▁ ▁Si S ▁ 6 2 0 / Si S ▁ 5 5 9 5 ▁ ▁Si S ▁ 6 3 0 ▁- ▁includes ▁North - ▁and ▁South ▁brid ges ▁( Si S ▁ 9 6 0 ) ▁and ▁ 2 D / 3 D ▁graphics ▁controller ▁( Si S ▁ 3 0 5 ) ▁on ▁one ▁chip ▁ ▁Si S ▁ 6 3 3 ▁ ▁Si S ▁ 6 3 5 ▁ ▁Socket ▁ 4 7 8 , ▁Socket ▁ 7 7 5 ▁Si S ▁and ▁AL i ▁were ▁the ▁only ▁two ▁companies ▁initially ▁awarded ▁lic enses ▁to ▁produce ▁third ▁party ▁ch ips ets ▁for ▁the ▁Pent ium ▁ 4 . ▁Si S ▁developed ▁the ▁ 6 4 8 ▁ch ips et ▁with ▁this ▁license ▁( Si S ▁ 6 4 8 ▁B ▁Ste pping ▁supports ▁Intel ▁Hyper - Thread ing ▁CPU ▁on ▁some ▁mother boards ▁like ▁M SI ▁ 6 4 8 ▁Max ). ▁ ▁Socket ▁A ▁( Socket ▁ 4 6 2 ), ▁S lot ▁A ▁ ▁Socket ▁ 9 4 0 , ▁ 7 5 4 , ▁ 9 3 9 , ▁AM 2 ▁Memory ▁support ▁is ▁dependent ▁on