As near as I can figure, a 3620 and 3640 are identical, save for the processor speed, chassis, and ability of the 3640 to take 4 modules (as opposed to the 3620's 2). That said, why is the 3620 specified as only takeing 64MB of maximum RAM vs the 3640's 128? Will the 3620 take 32MB SIMMS to hit 128MB of RAM? -- Kurt kurt at k-huhn.com