Home▸ Forums▸ Power Macintosh / Performa 6100 Overclock @90mhz — #9▸ Power Macintosh / Performa 6100 Overclock @90mhz — #9
Post #9 by trag
Source ForumPower Macintosh / Performa 6100 Overclock @90mhz — #9
CategoryPowerPC
Post DateFri, 1 Mar 2013 - 00:02
Original URLhttps://68kmla.org/bb/threads/power-macintosh-performa-6100-overclock-90mhz.27302/
Post
Did Apple use the 601v in the 8100/110 and the 9150/120 etc. before switching to the 604 in the 9500—? Or were the early PowerMacs all pure 601 processors?
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I think Apple used the 601v in their machines which were faster than 80MHz, but I'm not certain. Were the non-'v' versions rated to run any faster than 80 MHz?

All the NuBus PowerMacs were PPC601 based. Amongst the PCI PowerMacs only the various 7200s and the 7500/100 was PPC601 based, unless there was a Performa that used it. The Power Computing PowerCurve/120 (PCI machine) also used the PPC601(v) chip.

I'm pretty sure that the core power to the PPC601v is 3.3V vs. the 5V used in the original PPC601. If one probe the Linear Technology LT1086 near the CPU on such machines, the 80MHz and lower machines read 5V and the faster PPC601 machines read 3.3V. At least they have in my experience.

I'm not certain about the 7200/90 though.

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