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

To: Scot who wrote (83288)	12/16/1999 4:10:00 PM
From: Jim McMannis	Read Replies (1) \| Respond to of 1580088

The article said the die size of DDR is only 5% bigger than SDRAM and RAMBUST was 10-15% larger. On top of that RAMBUS has no manufacturing ability and wants hefty royalties on top of that. Micron, on the other hand has a real big manufacturing facility up thar in spud country and has been making .18u RAM chips for quite a while now... If the architecture is open...DDR should blow RAMBUST to the bowels of niche-dom. Jim

To: Scot who wrote (83288)	12/16/1999 5:08:00 PM
From: Goutam	Read Replies (1) \| Respond to of 1580088

Scot, Thanks for the links. I went to the AMDzone BB and there were several discussions of KX133 availability. It seems that no one has seen a board yet. Do you know what the projected costs for DDR will be? I know it will be cheaper than Rambust...but how much? DDR DRAM technology is just an evolutionary one from SDRAM - the dies would be slightly larger (5% - 10% for VC) than comparable SDRAM dies, few extra pins on the DIMM module from that of SDRAM DIMM, can be tested using the same test equipment that's used for SDRAMs (low if not zero additional infrastructure costs), low power consumption just as with SDRAMS (DRDRAM modules consume more power and require heat sinks), etc. MY WAG is that they may carry 40%-50% additional premium initially over the comparable SDRAM DIMMS. The premium should quickly drop down to 10% levels. Several manufacturers have already started manufacturing DDR DRAMS (Hyundai, Micron, Samsung, etc). By the time Athlon chipsets with DDR DRAM support come out, you may see only 10% additional cost over SDRAM. FYI: PC1600 DDR DRAM DIMMs use PC100 DDR DRAM chips and the price would be comparable to PC100 SDRAM DIMMs. PC2100 DDR DRAM DIMMs use PC133 DDR DRAM chips and the price would be comparable to PC133 SDRAM DIMMs. The numbers in the DDR DIMMS designations (PC1600, PC2100) are picked to reflect the data rate in Megabytes - for a DDR DRAM DIMM using PC100 DDR DRAM chips, this would be - 100M * 8 Bytes/DIMM * 2 for double data rate = 1600MillionBytes/Sec Regards, Goutama