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To: rudedog who wrote (64537)9/11/1998 9:36:00 PM
From: Tenchusatsu  Read Replies (1) | Respond to of 186894
 
CPQ already provides guidelines as to how and where to install cards in a mixed-speed environment. these are multi-bus systems, and so putting slower cards on an isolated segment allows fast operation on other segments.

Yeah, I know that. But I was originally wondering why backwards compatibility was necessary if cards which run at different speeds are going to be separated anyway.

Perhaps I can answer my own question. Servers have to be highly upgradeable, more so than desktops. A server down the road could feature several PCI-X buses, each with about three slots on them. An admin can just plug in the current 66 MHz PCI cards at the moment of purchase, then replace those PCI devices with 133 MHz devices as they become available. This is a capability that NGIO won't allow.

Tenchusatsu