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Politics : Formerly About Advanced Micro Devices
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To: Tenchusatsu who wrote (77058)10/26/1999 3:46:00 AM
From: Bilow   of 1577092
 
Hi Tenchusatsu; I would be totally stunned if they didn't gang the Rambus channels... Probably most memory designers think the same way.

One of the problems with a serial interface like Rambus is the latency caused by the serialization. By ganging them, that serialization latency gets halved.

Of course, I can come up with some reasons for not ganging them:
(1) Better granularity. (But does this matter in what was intended to be the i840 market?)

(2) Simultaneous accesses allowed, so two bus masters won't hurt each other's latency. (But everything but the CPU has huge pipeline delays anyway, so latency doesn't matter. On the other hand, in a two processor system this could be a consideration.)

But ganged systems are simpler, and provide better speed, most of the time.

-- Carl
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