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Second-Gen DDR SDRAM On The Horizon

Posted by CmdrTaco on from the hardware-i-wann-ahandle dept.

cplcap writes "This story in The Register picks up on Samsung's new DDR-II Chips, pushing DDR's speed up to 533 Mb/s and a 4.2GB/s memory bus. Prototype 512MB DIMMs are being produced, and IBM has developed a chipset to take advantage of the speed. There's a little more meat in Samsung's official press release."

2 of 145 comments (clear)

  1. Re:A few facts by Zathrus · · Score: 0, Redundant

    I can understand the issue of MHz vs systems that do multiple transfers per clock cycle (it's rather similar to the old bps vs baud difference for modems, where 9600 bps modems ran at 2400 baud using a Grey map to transmit 4 bits of data per cycle). Given that, MT/s should be equivalent to 2*MHz for DDR since there are two transfers per cycle.

    If so, then I'm missing something... since 333 MHz DDR I would have 666 MT/s by that definition, which is already higher than the spec'd maximum you list for DDR II.

    Clarification would be welcome.

  2. Re:A few facts by Zathrus · · Score: 0, Redundant

    Doh. I'm half asleep today. Bonk.

    And yes, I just made a wonderful example of myself for why MHz is a bad thing here.

    Thanks for the clarification.