eta F LO PS , ▁and ▁was ▁the ▁fast est ▁computer ▁in ▁the ▁world ▁until ▁third ▁quarter ▁ 2 0 0 9 . ▁The ▁world ' s ▁three ▁most ▁energy ▁efficient ▁super comput ers , ▁as ▁represented ▁by ▁the ▁Green 5 0 0 ▁list , ▁are ▁similarly ▁based ▁on ▁the ▁Power X Cell ▁ 8 i . ▁ ▁The ▁ 4 5   nm ▁Cell ▁processor ▁was ▁introduced ▁in ▁concert ▁with ▁Sony ' s ▁Play Station ▁ 3 ▁S lim ▁in ▁August ▁ 2 0 0 9 . ▁ ▁By ▁November ▁ 2 0 0 9 , ▁IBM ▁had ▁dis cont in ued ▁the ▁development ▁of ▁a ▁Cell ▁processor ▁with ▁ 3 2 ▁A PU s ▁but ▁was ▁still ▁developing ▁other ▁Cell ▁products . ▁ ▁Com mer cial ization ▁ ▁On ▁May ▁ 1 7 , ▁ 2 0 0 5 , ▁Sony ▁Computer ▁Entertainment ▁confirmed ▁some ▁specific ations ▁of ▁the ▁Cell ▁processor ▁that ▁would ▁be ▁sh ipping ▁in ▁the ▁then - for th coming ▁Play Station ▁ 3 ▁console . ▁This ▁Cell ▁configuration ▁has ▁one ▁P PE ▁on ▁the ▁core , ▁with ▁eight ▁physical ▁S PE s ▁in ▁sil icon . ▁In ▁the ▁Play Station ▁ 3 , ▁one ▁S PE ▁is ▁locked - out ▁during ▁the ▁test ▁process , ▁a ▁practice ▁which ▁helps ▁to ▁improve ▁manufact uring ▁yields , ▁and ▁another ▁one ▁is ▁reserved ▁for ▁the ▁OS , ▁leaving ▁ 6 ▁free ▁S PE s ▁to ▁be ▁used ▁by ▁games ' ▁code . ▁The ▁target ▁clock - fre quency ▁at ▁introduction