System Memory and Processors
System Memory
Chapter 3
40
Figure 3-1
x4000 8-RIMM Memory Expander Card
The eight-RIMM MEC uses two memory repeater hubs for RDRAM
(MRH-R). Each MRH-R supports two Direct RDRAM channels with two
RIMMs per channel. The Memory Controller Hub (MCH) interfaces to
the MEC using an expansion channel for each MRH-R. The MEC
supports 400 MHz operation delivering up to 3.2 GB/s memory
bandwidth using two expansion channels operating in lock step. The
expansion channel is a super set of the Direct RDRAM channel using an
additional two Rambus Signaling Levels (RSL) to communicate channel
and control information from the MCH to the MRH-R. The RDRAM
memory interface can achieve greater than 95% use of the maximum
bandwidth.
1B (J1)
2B (J2)
3B (J3)
4B (J4)
3A (J7)
4A (J8)
1A (J5)
2A (J6)
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Summary of Contents for Workstation x4000
Page 11: ...Chapter 1 11 1 System Overview This manual downloaded from http www manualowl com ...
Page 25: ...Chapter 2 25 2 System Board This manual downloaded from http www manualowl com ...
Page 43: ...Chapter 4 43 4 System BIOS and Resources This manual downloaded from http www manualowl com ...
Page 81: ...Chapter 6 81 6 Power Specifications This manual downloaded from http www manualowl com ...
Page 93: ...Chapter 7 93 7 Connector Pin Outs This manual downloaded from http www manualowl com ...
Page 121: ...Chapter 8 121 8 Mechanical Specifications This manual downloaded from http www manualowl com ...
Page 125: ...Chapter 9 125 9 Hardware Components This manual downloaded from http www manualowl com ...
Page 203: ...Chapter 11 203 11 Troubleshooting This manual downloaded from http www manualowl com ...
Page 231: ...Chapter 12 231 12 Contacting Support This manual downloaded from http www manualowl com ...