Estou agora a informar-me um bocado sobre as Memórias RIMM. Achei este pequeno excerto de texto que talvez pode ser o problema do Papi.
One has to carefully mind the mainboard's specification when purchasing RDRAM as modules come in various flavours. Most common are 16-bit single channel RIMMs with either 168 or 184 pins, which are usually interchangeable, and 32-bit dual channel modules with 242 pins. You can't use 32-bit modules in a mainboard designed for 16-bit ones and vice versa.
Moreover, if you have a mainboard with dual or quad channel memory subsystem, you have to upgrade all the channels at once. 16-bit modules provide one channel of memory, while 32-bit ones provide two. Therefore, if you have a dual channel mainboard accepting 16-bit modules, you have to add or remove RIMMs in (matched) pairs. If you have a dual channel mainboard accepting 32-bit modules, you can add or remove single RIMMs as well.
Stick/module specification
*PC600: 16-bit, single channel RIMM, specified to operate at 300 MHz clock speed, 1200 MB/s bandwidth
*PC700: 16-bit, single channel RIMM, specified to operate at 355 MHz clock speed, 1420 MB/s bandwidth
*PC800: 16-bit, single channel RIMM, specified to operate at 400 MHz clock speed, 1600 MB/s bandwidth
*PC1066 (RIMM 2100): 16-bit, single channel RIMM specified to operate at 533 MHz clock speed, 2133 MB/s bandwidth
*PC1200 (RIMM 2400): 16-bit, single channel RIMM specified to operate at 600 MHz clock speed, 2400 MB/s bandwidth
*RIMM 3200: 32-bit, dual channel RIMM specified to operate at 400 MHz clock speed, 3200 MB/s bandwidth
*RIMM 4200: 32-bit, dual channel RIMM specified to operate at 533 MHz clock speed, 4200 MB/s bandwidth
*RIMM 4800: 32-bit, dual channel RIMM specified to operate at 600 MHz clock speed, 4800 MB/s bandwidth
*RIMM 6400: 32-bit, dual channel RIMM specified to operate at 800 MHz clock speed, 6400 MB/s bandwidth
