I have a USB Bluetooth adapter from IOGEAR #GBU421 but not working on this system.
I have a question on the processor upgrade, everything seams to be working, however now
the L3 Cache is 1 MB (per CPU) shouldn't it be 2 MB (per CPU)?
The 1.25 DP processors came from a FW 800 machine, what would be different in those processors?
I understand the differences in the motherboards between these two machines, but the processors.
Any Ideas Anyone!
The first appearance of DDR technology in Apple computers was not in main memory,
but in the form of the backside or ‘L3’ cache interfaced to the Motorola PowerPC G4
7450 CPU. The early Apple processor design utilized 1MB of DDR cache (the
PowerMac G4 733 using the Digital Audio motherboard.) Other designs use 2MB of
DDR cache for L3, although some of the recently introduced Apple offerings have moved
back down to 1MB of L3 DDR.
I did have a 1.25GHz DP (MDD) new in 2003, and it did have 2MB of L3 Cache (per cpu). I used to boot into OS 9.2.2 so it was not a FW800 machine. What I did forgot was the 1GHz DP (MDD) had only 1MB of L3 Cache. That explains why I have only 1MB Cache is because this was originally a 1GHz machine before I upgraded the processor, and yes the doner machine I got the processers is a FW800 DP 1.25GHz again at 1MB Cache.
Thanks for everyone's input.
The Following is taken from Apples Spec Sheets
Power Mac (MDD)
M8573LL/A Dual 1.25GHz PowerPC G4 2MB DDR SRAM per processor
M8689LL/A Dual 1GHz PowerPC G4 1MB DDR SRAM per processor
Power Mac (FW800)
M8841LL/A Dual 1.42GHz PowerPC G4 2MB DDR SRAM per processor
M8840LL/A Dual 1.25GHz PowerPC G4 1MB DDR SRAM per processor
You can also use the dual 1.42 in a non-FW800 MDD.. I have done this myself when I used to own one and it ran just as fast.. My original processor was the Dual 1.25 w/2MB L3 Cache, so there were 2MB L3 cache dualie 1.25's.
That's great information. I have a question, would that 1.42GHz boot into OS 9?.
Another question I would like to post to everyone is:
The FW800's could not boot into OS 9 directly, so is it the motherboard, or is it the processors that limit
the booting into OS 9?
Currently Being ModeratedApr 15, 2013 11:01 PM (in response to MajorMacintosh)
Sorry didn't get back fast enough.. Yes, even if its a 1.42 and the logic board is non-fw800.. it will still boot into OS 9 without any problem.. The FW800 is the hardware and the chip which prevents it from booting into OS 9 as OS 9 does not support FW800.
Wanted to give you all a update since my last posting.
Looking for a 1.42GHz (DP) daughter card and heat sink from a FW800 (anyone have one?)
Started having some issues with the power supply AcBel #APl1PC36 Rev.B. Causing intermittent lock-ups waking from sleep and such. I have this connected via ADC to my Apple Cinema HD Display 23". As I
understand this display uses apx. 70 watts that is drawn from the PSU. It looks like I will need to rebuild the PSU as some capacitors with age are failing. Before I go on, yes I do know you can mod and install a standard pc PSU but you loose two very important functions. #1 You can't use a ADC display, #2 Sleep can be a issue, as pc PSU's don't provide the 5V needed for deep sleep. With that said, I will replace a large portion of the capacitors. I will keep you all posted on this project. My resource for this project is "http://www.badcaps.net".
Also has anyone replaced the fans on the PSU and the CPU with something else, as these Mac's are 11+ years old, I wonder if "Today's Fan Technology" will help in the airflow and noise department? If you have, please post what you used and if you needed to do anything with the wires, allot of today's fans are 3 and 4 wire, and the Mac's are just 2 wire.
Thanks So Much In Advance!!, Your All Great!
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