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原帖由 ddbaba 于 2007-8-15 18:02 发表 ![]()
神气什么?
把ibm的 power4是多少年前的?
当时的p4像个废柴
现在intel最高段的安腾也不是被power5搞得像个sb
看清楚哦,两年前而已,那个时候Dothan早发布了吧。
PowerPC 7447/7457 "Apollo 7"
As of early 2005, the fastest processor shipping in Apple's G4 lineup was the MPC 7447B,running at 1.67 GHz and found in the January 2005 revision PowerBooks.The 58-million-transistor 7447 is slightly improved from the 7450/55,it has 512 KiB on-chip L2-Cache and was manufactured at 130 nm, hencedrawing less power. With the 7447A, which introduced an integratedthermal diode as well as DFS (dynamic frequency scaling) Freescale wasable to reach a slightly higher clock. The 7457 has an additional L3Cache interface. However, its frequency scaling stagnated when Applechose to use the 7447 instead of the L3 cache-enabled 7455 they usedbefore. This decision was most likely taken because of cost concerns,since fast SRAM used for L3-Cache is fairly expensive. The onlycompanies that offer the 7457 in the form of upgrades for the Power Mac G4 and Power Mac G4 Cube are Giga Designs, Daystar Technology (now [1], they use the 7457 only for iMac G4 upgrades) and PowerLogix. The Pegasos computer platform from Genesi also uses 7447 in its Pegasos-II/G4.
[ 本帖最后由 Prescott 于 2007-8-15 21:27 编辑 ] |
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