I have 5 28xx with default memory 256mb. Original memory stick for 512mb costs around 3500USD. The same stick from PC DDR1, PC333, 512mb - only 20USD. (Save is 3500*5-20*5=17400USD)
I have installed the sticks, routers loaded well, memory was defined well but with warning that new DIMM is without ECC. So in "show version" i get:
DRAM configuration is 64 bits wide with parity disabled.
How important is that? Did anybody met any problem with this thing? I am about to set the routers to server the network and wondering a bit.