updated 05:55 pm EST, Mon February 11, 2002
Motorola is continuing (aggressive) work on its G4 processor, despite widely circulating rumors of the G5 chip, according The Register. While the much more evolved PowerPC 7500 is expected next with an on-board memory controller, the PowerPC 7470, a tweaked version of the current Apollo 7450 G4, will be ready for volume production by this summer, offering a 0.13 micron process, support for up to 512K of L2 cache and up to 4MB of DDR-SDRAM L3 cache, and a modified bus protocol:
"MPX+, which supports double data transfer and which should effectively run at 266Mhz according to sources. ...The MPX+ bus retains MPX's 36-bit addressing lines, and is described as interim measure. Don't expect dramatic leaps in SMP scaling - two will remain the sweet spot. The 7470 should scale to 1.5MHz. In parallel development, Motorola is priming a cut-down 7470 labelled the 7460, which doesn't support L3 cache. "