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To: grok who wrote (31474)	10/2/1999 11:00:00 PM
From: jmac	Respond to of 93625

I don't think Intel will have a hard sell once/if they fix the problem. I am not worried about that. What I am worried about is the lack of any credible information about what the hellis currently going on to fix the problem.

To: grok who wrote (31474)	10/2/1999 11:04:00 PM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi KZNerd; Re the number of RDRAMs that are placed in a RIMM module and granularity... Someone, (I think it was you), posted a link to the Intel site that gave a list of all the RIMM modules that are currently okay by Intel. They calculated chip counts of 4, 6, 8 and 16 per RIMM. One wonders why they don't offer a RIMM module with only a single RDRAM on it. My guess is that the costs of packaging a single chip like that would be too high, relative to the cost of the RDRAM chip (when they get the RDRAM chips' costs down to silicon only). So, as far as the customer is concerned, the granularity advantage of RDRAM is somewhat exaggerated. It is not as much as what the disparity in bandwidths per chip would suggest. Another thing to notice is that the smallest number of chips they put on a RIMM was 4. This means that the actual granularity is comparable to four x16 DDR SDRAMs, which would give a peak bandwidth of about the same as the RIMM module, (i.e. 1.6GB/sec), but at a much lower cost. A funny realization I had today was that the RIMM modules require two pins per signal, one to enter the package and one to exit. This eliminates a good bit of the board pin count advantage that RDRAM would otherwise have, as DIMMs only need one pin per signal. The rest of the board space or layout advantage is probably taken by the RDRAM requirement for wider traces, spaces, and for termination, not to mention the cooling issues. -- Carl I didn't mean to try and chase you off SI! I try to avoid telling people what to do, sometimes I can get bossy. Glad you're still posting. Every now and then I write something in a moment of blurry thinking, and hit the "publish" button too quickly.