Here are the results of my Powermac Digital Audio, equiped with Sonnet 1.8. I could have sworn that a few days ago I passed the memtest with 3x 512Mb and with better results also... but or I am getting crazy or something else is going on, I had to replace the 3rd 512mb with a 256Mb to pass the memtest. All in all not to bad these results and more than enough for what MorphOS is today.

Ram Disk:> cpu
System: PowerMac3,4
Machine: 0x1
PageSize: 4096 Bytes
CPUCount: 1
CPU0: 7445/7455 (G4) Version 32769 Revision 0
CPU0: CPUClock 1799999995 BusClock 133160004
CPU0: FPU Unit exists
CPU0: Altivec Unit exists
CPU0: Performance Monitor Unit exists
CPU0: DataStream Unit exists
CPU0: ReservationSize 32
CPU0: Ticks 4
CPU0: CacheL1Type 0x0
CPU0: CacheL1Flags 0x1000F
CPU0: ICacheL1Size 32768
CPU0: ICacheL1Lines 1024
CPU0: ICacheL1LineSize 32
CPU0: DCacheL1Size 32768
CPU0: DCacheL1Lines 1024
CPU0: DCacheL1LineSize 32
CPU0: CacheL2Type 0x0
CPU0: CacheL2Flags 0x1001D
CPU0: ICacheL2Size 262144
CPU0: ICacheL2Lines 0
CPU0: ICacheL2LineSize 0
CPU0: DCacheL2Size 262144
CPU0: DCacheL2Lines 0
CPU0: DCacheL2LineSize 0
Ram Disk:> memtest disable
Allocated memory at 0x28465D40 -> 0x6C4F59BF, 1141439616 bytes
Writing and Verifying 0x00000000...
Write 552 MB/sec. Verify 397 MB/sec.
Writing and Verifying 0xFFFFFFFF... Write 554 MB/sec. Verify 397 MB/sec.
Memory is ok!