Apple WS 9650 Manuale Utente

Pagina di 237
 
 Basics
Dual In-Line Memory Modules (DIMMs) - 14
 
Dual In-Line Memory Modules 
(DIMMs)
 
The computers in this manual ship with extended data output 
(EDO) DRAM dual in-line memory modules (DIMMs) 
instead of DRAM SIMMs. Whereas SIMMs have 72 pins, 
DIMMs have 168 pins. The extra pins provide a 64-bit data 
path, compared to a 32-bit data path for SIMMs. In addition, 
DIMMs do not have to be installed in pairs like the SIMMs on 
earlier Macintosh models. (However, to take advantage of 
memory inter-leaving, the DIMMs should be installed in 
paired slots. See “Memory Configurations” in Basics for 
more information.)
 
Important: 
 
The computers in this manual use +5 V DIMMs 
only.  Single In-Line Memory Modules (SIMMs) used in 
previous Macintosh models are NOT compatible with these 
computers.