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To: jbn3 who wrote (48738)	6/23/1998 3:15:00 PM
From: Meathead	Read Replies (1) \| Respond to of 176388

3, Yes.... 100Mhz SDRAM = 800MB/sec 400Mhz RDRAM = 1.6GB/sec (single channel) 400Mhz RDRAM = 3.2GB/sec (dual channel) It requires a new chipset (Intel Camino, Carmel). New connectors, new RIMM modules, new RDRAM devices (chips). It has very special routing constraints on the motherboard/module, 28ohm target impedance etc. In short, it will have to be designed into the chipset/system. We'll see memory configurations in the GB range before long, dwarfing todays 32/64MB standard configs. The bandwidth appetite of the CPU, AGP, PCI, 1294, USB, etc. is becoming huge. When you look a the load placed on the memory bus, you can see why the extra bandwidth is needed. AGP 4X = 1GB/sec PCI64 = 533MB/sec *Add these two together then select a CPU bandwidth below and add it to this sum. 64bit CPU @ 100Mhz = 400MB/sec 64bit CPU @ 200Mhz = 800MB/sec 128bit CPU @ 200Mhz = 1.6GB/sec SDRAM just wont be able to keep up. MEATHEAD