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Old 09-26-2006, 07:11 AM   #1 (permalink)
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Default Worlds fastest memory interface up to 6.4 ghz

Rambus XDR™ DRAM technology is a total memory system solution that achieves an order of magnitude higher performance than today's standard memories while utilizing the fewest ICs. Perfect for graphics processing, consumer electronics, network, and server applications, a single, 2-byte wide, 3.2 GHz XDR DRAM component provides 6.4 GB/sec of peak bandwidth.

The XDR solution achieves its performance using several components. The XDR DRAM device is a high-speed memory IC that turbocharges standard CMOS DRAM cores with a high-speed interface capable of 3.2 and 4.0 GHz data rates with a roadmap to 4.8, 6.4, and 8.0 GHz in the future. On the controller side, the XIO (XDR I/O) cell provides the same high-speed signaling capability found on the DRAM, but adds additional enhancements like FlexPhase™ technology. The XMC (XDR memory controller) is a fully synthesizable logical memory controller that is optimized to take advantage of the technology's many special features like Dynamic Point-to-Point. System clocks are also provided using the XCG (XDR Clock Generator), which has four programmable outputs and is guaranteed to meet the clocking requirements for the XIO and XDR DRAM devices. Rambus also completely specifies the physical interconnect, which is designed to operate on standard boards and packages designed for high-volume consumer applications


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Old 09-26-2006, 07:30 AM   #2 (permalink)
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interesting. i didn't realise XDR was being designed by RamBus. interesting to see they're willing for another crack at proprietary technology after the RD-RAM fiasco. if this is all it's cracked up to be without the drawbacks RD-RAM had then AMD had better jump to quick and make a deal over the technology because Intel will slit their throats and get exclusive rights to it although it could go the same way it did with RD

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Old 09-26-2006, 08:05 AM   #3 (permalink)
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if it becomes supported enough, and is not too expensive, then it should take off.

the biggest problem with RD was that it was expensive

although I'd like to see what the latencies of XDR would be like
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Old 09-26-2006, 09:27 AM   #4 (permalink)
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AMD is moving to FB-DIMM after DDR3 - Intel said they were and now haven't said anything.
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