>>197
Yes, you're right, I just meant from a general-purpose-computation point of view.
I read about people connecting their AVRs to DRAM chips but apparently the manual refresh takes up about 10% CPU power. Maybe I could use a second AVR to do that? Maybe I could use the second AVR as a system bus and memory cache as well. Although 8 KiB isn't a lot. Also, I'm not sure about the extra latency involved in memory accesses.