Apple powermac 8500 series Servicehandbuch

 

 Basics

Memory Configurations - 15

 

The Power Macintosh 8500 and WS 8550 logic boards have 

eight DRAM DIMM slots, each with a 64-bit data bus. You 

can increase the DRAM to a total of 512 MB using 5-volt, 

64-bit-wide, 168-pin fast-paged mode, 70 ns DIMMs.

 

 These computers do not have any main memory 

soldered to the logic board. At least one RAM DIMM must be 

present for the computers to operate. DRAM DIMMs can be 

installed individually; however, if you wish to take 

advantage of the computer’s interleaving* capability, which 

provides maximum performance, you must install the 

DIMMs in matching pairs and in paired slots (A4 and B4, A3 

and B3, and so on). 

* Memory interleaving allows the computer to read or write   

to its memory while other memory reads or writes are 

occurring, thus providing for faster performance.