Apple Mac 8600 - Manual (Page 17)

Basics Dual In-Line Memory Modules (DIMMs) - 15
Important
: The Power Macintosh 8600 Series computers
also use VRAM DIMMs (112-pin 70 ns or faster) instead of
VRAM SIMMs. The VRAM SIMMs used in earlier Power
Macintosh models are
not
compatible.
Note:
While the Power Macintosh 8600 and 9600 Series
and Workgroup Server 9650 computers ship with EDO
DIMMs, the computers’ memory controller treats EDO
DIMMs like fast-paged (FPM) DIMMs. You can therefore
use either EDO or fast-paged DIMMs in these computers;
however, EDO DIMMs will run in FPM mode.