HYS72T256420HFD-3S-B modules equivalent, 240-pin fully-buffered ddr2 sdram modules.
* Detects errors on the channel and reports them to the host memory controller.
* Automatic DDR2 DRAM Bus Calibration.
* Automatic Channel Calibration.
* .
* Module organisation one rank 64M × 72, one rank 128M × 72, two ranks 128M × 72, two ranks 256M ×72
* JEDEC St.
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