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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Ali Chen who wrote (69225)8/19/1999 10:28:00 AM
From: grok  Respond to of 1584624
 
RE: <Please pay attention to the remark in column 4: "Die size (pad limited)". I think this is the key to large die sizes, and to the smaller size for RDRAM due to smaller pin count.>

Yes, exactly right. Another tip off is that the two 492 pin chips have exactly the same die size. Note however that the 656 pin chip is smaller than the 553 pin chip. It is on denser technology (0.25u vs 0.35u) and may have tighter bonding rules too. What chip sets need is "area bumps" with C4 packaging to get out of these pad limitations.

Someone, I think Cirruslvr said that the chips must be almost finished because they have die sizes. But no such inference should be made since they only need to know the number of pins and the bonding rules to know the die size. This suggests that on the DDR, 2P, 4X AGP they don't even know the pin count yet.