Memory

• DDR-SDRAM:

  • 8 bytes x 2 x clock (x channels)
  • uses rising and falling signal flanks
  • P3700 DDR 466 MHz, 512MB =$94 (pricewatch)
  • 7.5 GB/s
  • P3200 DDR 400 MHz, 512 MB=$70 (pricewatch)
  • 6.4 GB/s

• RAMBUS

  • 16 bit x clock (x channels)
  • RDRAM 1066MHz, 512 MB=$160 (pricewatch)
  • 2.1 GB/s x (4 or more) channels
  • XDR DRAM (RAMBUS): 3.2 to 6.4 Ghz, 16 to 32 bits, up to 12.8 GB/s, 100 GB/s end of 2005