Not even close, AFAIR.
I know there've been a few speed tests posted before. Personally I'd be more curious to see speed tests comparing an A4000 with a A3640 and that 64MB motherboard memory hack and vs. one with an '040 card with local RAM.
Is A4000 motherboard memory faster than memory addressed through one of the Zorro III slots? (I would assume so)
In order of speed from fastest to slowest goes:
1) Memory located on processor board
2) A4000 motherboard memory whether that's 64MB or 16MB they're the same speed
3) Zorro-3 RAM 80-95% the speed of motherboard ram
There are certain cases where Zorro-3 RAM could be faster for specific applications like if you also had a Zorro-3 SCSI card and the Zorro RAM had higher priority, you will get faster HDD speeds, but not if you had even faster processor board RAM. If you overclock an A3640 your motherboard RAM gets overclocked too but the 64MB motherboard upgrade is most likely not compatible with overclocking but 16MB often overclocks just fine.
