Used in Power Mac G4 models between 667 to 800 MHz. PowerPC 7450 - operated at 2.5V with 256 KB onboard L2 cache and also supported an external 元 cache.Used in Titanium PowerBook G4 models with gigabit ethernet. PowerPC 7440 - code named "V'ger" and sometimes called "G4 Plus", operated at 1.5V and contained 256 KB onboard L2 cache, but did not contain 元 cache support.Pin compatible with latter PowerPC G3 processors, making possible upgrades of PowerBook G3 "Pismo" models. PowerPC 7410 - code named "Nitro", a low power version with support for up to 1 MB L2 cache, used in the first Titanium PowerBook G4 models between 400 to 500 MHz.PowerPC 7400 - code named "Max", supports up to 2 MB L2 cache and used in the first "graphite" Power Mac G4 models between 350 to 500 MHz.Though the IBM and Motorola versions use compatible instruction sets, the hardware logic implementations are very different from one another. They were touted by Apple for containing a " Velocity Engine", a 128-bit vector processing unit marketed as AltiVec by Motorola, and Vector Multimedia Extension (VMX) by IBM. G4 processors contained a 32 KB instruction cache, a 32 KB data cache, and varying levels of support for L2 and/or 元 caches.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |