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Well done @obsolete ! Back in 1996-2000, when working at a CPU card maker, the L2 was always the issue when trying to reach the 60Mhz barrier. With a G3 or G4 card, this wasńt an issue as you the L2 cache wasń beneficial as a L3 cache. On TNT and Nitro boards, it was recommended to remove it...

Yes it does. Some cards only work within the „simpler“ Tanzania L2 Slot as they can boot directly from there because of the differences in slot design you have outlined above. For Gazelle and Alchemy, a card needs to have a CPLD to do some bus magic to take over the CPU bus after initialization...

In my G4s, some of the newer SATA III SSDs have shown compatibility issues with SATA I mode on SIL based SATA I cards — even though, SATA should be backwards compatible, it depends on the actual drive. I need to check the exact type of drives that run in my G4s and G3s

Looking for TMS 34020s on eBay, you can see them on sale from 70€ (32Mhz) up to 130€ (40Mhz). So, I guess @Bolle is right, they obviously make more money on selling the video controllers on their own than with selling complete graphic cards. I've got my ProNitron GA21 inside a Mac II for less...

@Bolle i will send you a PM to discuss how to extract the ROM

@Peter-Erik See the attached image - that’s my Pronitron GA21 - means it runs at 1152x870. The GA19 will ru at the typical 19“ resolution if 1024x768. So, a DB15 to VGA Adapter needs to be set to that resolution - plus the matching sync for the display in use. However, without the TMS graphics...

I guess, the card is missing the video controller in the left bottom corner. A TI TMS34020….

The G3 has only very limited multiprocessor support and I donˋt think a G3 and G4 Tandem will really work - let aside the socket fit. the BeBox and the Pios One had multiple G3 CPU support - but that was a heck of extra hardware to get it to work (and never under Mac OS in the case of the CHRP...

On my MDD 1.25 dual, I am getting around 59mb/sec with an SSD on the ATA66 Bus and 95mb/sec on the ATA100 bus. The same SSD on the SATA Card reaches 96mb/sec. So it seams that the later G4s have a PCI throughput ceiling of around 100mb/sec. That's why I did attach the MDDs SSD just to the ATA100...

The G3 b/w as well as the beige G3 benefit from the SATA card. The Sawtooth G4‘s ATA66 bus is almost as fast as a SATA PCI card. 60mb/sec in ATA66 vs 75mb/sec with the SATA card using the same SSD. Later G4s ATA100 bus is faster than a PCI based SATA card.

See this thread…. HD speeds. The theoretical max. is a far cry from what the actual Apple implementation offered in real world throughput. A more modern G3 beige reaches roughly 50mb/sec with a SATA card. The 8600´s fast scsi bus has a theoretical max. of 10mb/sec - x4 or even x4.5 of that is...

I double checked it with a Rage 128 DVI and the ADC/DVI Adapter. The same results as @chriscarruthers mentioned. Tried again with a ALU Cinema Display 20 - startup screen for a brief moment and then black. At the end it shows that the Rage 128 (GL) was limited on the DVI/ADC side as the VGA port...

I am running into issues using Rage 128 AGP ADC cards with my 20" ADC Studio Display LCD. At first, I thought it was the Cube´s VRM or power supply, because after a few seconds with the Mac Boot screen, the LCD goes black - even though it still shows the activity light and I can shut down/sleep...

Even though Apple introduced DDR Ram with the MDD and the corresponding PowerBook (that used a different PCI/Memory controller), the Max Bus between G4 and Bridge was only SDR. Thus only DMA transfers from I/O to Ram benefit from the DDR Ram, the CPU to Memory path did not.

I guess, changing the clock chip will not get you to 200Mhz. The U2 memory and pci controller also needs to be configured to run an fsb above 167mhz. I am not sure whether this apple specific ASIC is able to do so...

I worked with Motorola/Ireland during the Clone Era and they also used the term G1 and G2 on their slides - most likely to separate it easier from the upcoming G3. The general public did not make use of it and in any kind of adverts, the G1 or G2 term was not used - afaik.

Interestingly, XBench even saw 95mb/sec for 4k blocks sequential uncached write (read maxes out at 80mb). 95mb/sec is pretty close to the interfaces maximum.

Today's experiment: upgrading a final generation PowerBook G4 15-2" 1.67GHz Power Book G4 with a newer drive. The PowerBook has an ATA-100 interface. So I combined the same mSATA SSD with the same 44pin ATA Interface board as in my PowerBook G3 tests above. As expected, the mSATA SSD almost...

Would be interesting to see how your dual G4 400s compare to my single G4 1000 in the beige. OS 9 use of multiprocessing is limited but there might be cool use cases.

Indeed, interesting. It's just the sticker on the connector and the silk screening on the backside of the PCP that sets them apart