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not so sure on this one, this may well be the case, but from what I recall reading many years ago, sonnet themselves claimed it was some sort of errata between the 7450/7455 CPU and the MPC106 itself that prevented them from operating the whole lot at 100Mhz of course sonnet might of been BSing...

realised I did not follow up on this, but sadly a little bit after this someone else did contact sonnet, and from what I heard, they where not very helpful at all! I dont know if the staff had changed or he just got the wrong person to speak! I just know that a few years ago, admitadly...

I did a bit of digging on this front, turns out OWC themselves still have a couple pictures of the card on their website still, including one with the heatsink removed http://eshop.macsales.com/images/Items/plgpcigx10001largenohs.jpg check out that bodge wire on the top right in the...

interesting sounds like its not recognising the last PLL bit properly, If I recall correctly of the patches offered in the Powerlogix Patcher is for to patch the system for correct PLL/frequency reporting, I take it you you have tried selecting that option? (but maybe out of the box its only...

interesting :) what clock frequency/voltage where you running at? I wonder if it was tripping some sort of over current protection somewhere? I know that back in the day there was a prototype 900Mhz G4 Pismo upgrade https://lowendmac.com/ed/bashur/12db/pismo-unicorns.html I always wish there...

Just been thinking about this, which PLL are you using/setting to achive 800Mhz? since I know the 750FX and 750GX are a bit sepcial in that they have 2 PLL's PLL0 and PLL1, so I wonder almost if the Sawtooth BootROM is reading from the wrong PLL range? also as an aside if the 750GX supports 32...

thats pretty sweet! here is a schematic for a PowerMac 6500 Logicboard this system uses a CBGA255 603ev, and is compatible with a 740 in that if you BGA swap one on there, it will work OOB (with the only adjustments needed being vCore if your installing a PPC740L or MPC740P) so perhaps that...

you will likely always get 3 beeps if you remove onboard RAM, since the BootROM is hard coded to look for it and try and test it its the same as if you take the RAM chips off a SODIMM and install it into a Mac it will beep 3 beeps no good banks, rather then a single beep of no RAM, since the...

very interesting! I will have to dig out one of my Factory G3 Uninorth macs (one of my snow iBook's) and see how good or bad its main memory performance is, it will probably be my 750FX iBook G3 since thats the closest I have to your 750GX Sawtooth setup I would love to see one of your 750GX...

for what its worth, I think the commonly available Sonnet Firmware patcher does support the GigE TiBook that they offered a 7457 Mail in upgrade service on, as a long time ago I was poking around the Sonnet firmware patcher and I noticed mention of 4.2.9 firmware, which is the TiBook GigE :)

im just wondering @herd have you had a chance to try one of your 750/7400/7410 to 744X interposers with your Pismo yet? I bet a 7448 Pismo would be a very nice performance portable :)

as I understand it the choice of faster Grackle chips on the high end also produced yield issues, and production delays, hence the G3 PDQ which as I understand it stands for Pretty Damn Quick, as in, the Lore goes that Steve Jobs said something along the lines of you better fix it Pretty Damn...

for what its worth, I briefly tried BeOS with a Radeon 9200 Mac edition, with a 1080p monitor, ya get some interesting results! https://forums.macrumors.com/threads/powersurging-to-mac-os-x-10-5-8-power-macintosh-9600-fun.2144305/page-8?post=33260964#post-33260964

for what its worth I use 0.76mm leaded balls for reballing all of my PPC CPU's and that seems to have worked fine so far @herd goes into a bit more detail about the weird 0.89 balls found on factory fresh CPU's here :)...

interesting! and how does the CPU show up in OpenFirmware once patched? does it just show up as PowerPC 60? as 7447/7448's do with the standard PowerLogix patch, or does it show up as a PowerPC 750 with all the L2 cache child node? and on that how did it show up in Linux was the L2 cache...

very interesting! so theres a look up table of sorts, its very interesting that for 2.0.3 apple did happen to add that 8 replacing one of the ?'s , perhaps PowerPC 608 was going to be the name for the G3 before it was renamed to the 750 (I do recall reading that it was called the 750 in the end...

yeah Old World Macs thankfully dont have any sort of "halt on Unknown CPU" check like New World PowerMacs do, so they inherently dont need any patching for more modern CPU's (although of course on those systems even a most basic G3 upgrade will need some sort of 3rd party software to enable L2...

I am pretty positive that it did not require any BootROM patching or NVRAMRC patches, I seem to recall even in my G3 beige, it just saw the 750GX ZIF, as a 750P ZIF with 1MB of "backside" L2 cache, even in OpenFirmware, and thats a system one *cannot* patch the BootROM on since it truly is read...

Ooh a BGA255 interposer for the 750GX? that could be quite fun in its own right, for upgrading Old world PCI Macs :) the PPC740L will work on a PowerMac 6500's motherboard, once ya adjust the vCore suitably...

interesting, I very briefly had one of those 750GX ZIF's in my hand I posted a picture of my one earlier in this thread (the one being held by fingers with a messy background was my own picture :) ) heres a few extra shots I took of how various software saw the CPU as, all software (including...