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To: Petz who wrote (6461)	8/24/2000 3:21:31 PM
From: James Calladine	Respond to of 275872

Petz: www.anandtech.com recently did a review of socket a motherboards, which might indicate capabilities. Best wishes, Jim

To: Petz who wrote (6461)	8/25/2000 12:56:40 AM
From: Joe NYC	Read Replies (2) \| Respond to of 275872

Petz, some of the Socket A boards are rated for the 512M Dimms, which gets you to 1.5G. Not sure which. The standard memory chip these days is 128 Mbit. 256 MB DIMM uses 16 of them, 8 on each side. 512 MB DIMM using these standard chips uses 32, and stacks them 2 levels high. These kinds of DIMMs need to be of the Registered type, which uses some buffers, and it causes one cycle delay. A registered DIMM with chips rated CAS-3 (as are most that I have seen) would end up working as if it was CAS-4. (pete gerasi could probably explain it better, but this is my understanding). So going with Registered 512 MB DIMM will mean significant performance penalty compared to 256 MB PC-133 CAS-2 chips that are widely available (from Micron's Crucial). Joe Edit: When 256 Mbit chips become available later this year (probably at significant premium initialy), 512 MB DIMMs will become more viable.