On 21/09/2001 07:37, "(PCI PowerMacs)" <[EMAIL PROTECTED]>
wrote:
> Hey All,
>
> Looking at buying an XLR8 ZIF carrier and a processor and wondering
> if I should spend the few extra $ and buy a multi-equipped even
> though it may be awhile before I can afford a second processor.
>
> Have pretty much scoured XLR8's site and am absorbing as much as my
> feeble mind can at this point.
>
> Figured I'd check in with the experts here to clarify a couple of
> things before I start reeling off credit card #s to online vendors.
>
> Anyone here on the list running one of XLR8's multis? If so, I'd be
> interested, and appreciative, to know what your particular setup is
> and how it's working for you.
>
> My understanding, from XLR8's site, is that you can mix and match
> processor speeds on the carrier. Again, any feedback on this point
> would be greatly appreciated.
>
> If, as I'm assuming from my data-gathering thus far, that the above
> is true, I'm also wondering, but was not able to ascertain from
> XLR8's site (info overload set in), is it also possible to mix and
> match processors, as in a G3 and a G4 together? Again, if so, and
> anyone is doing so and would care to share the specifics of their
> particular setup, it would be appreciated.
>
> Thanks,
> Donovan
I have the MACh MPe Carrier card and a 400Mhz MACh G4 MPe ZIF; although I
don't have a dual processor setup yet, I plan on it.
The MPe standard allows the G4 chip to use it's native multi processing
signals in relation to other G4s, the G3 does not support multi processing.
Differing speed G4s are supported by the MPe design but I think XLR8 prefers
that you use MPe ZIFs for compatibility. Most ZIF designs are based on the
G3 pinout/sigals, that's why they have released the specs to other companies
to include the extra signals.
My setup:
7300 (180 MHz originally/45MHz bus)
400MHz MACh Carrier MPe
336 Megs of memory (2x 128 sticks and 1x 64 stick)
Sonnet Tempo Ultra ATA 66 PCI card
20 Gig Maxtor Diamond Max Plus 60 ATA 100 hard drive
2 Gig Quantum SCSI II hard drive (original Apple drive)
ATI Radeon Mac Edition (32 Megs DDR)
Apple 17" MutiSync Monitor
12x Internal Apple CD (soon to be IDE DVD)
System 9.2.1
I have tweaked carrier card to 46.2MHz and am running at 415MHz and
increased the cache to 277.2MHz. I have pushed the MHz to 475 but I have had
timing problems with memory. The beauty of the XLR8 carrier card is the
variable bus speeds to tweak the speed for your system.
If you ever intend to run OS X or graphic programs on your system then you
should only consider a G4 ZIF.
I hope I have answered your questions,
John
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