Both new versions of the GeIL Ultra Platinum Series products use 3.5ns memory chips, 6-layers PCBs and are equipped with copper heat-spreaders and may work at 2.6V ~ 2.95V voltage. The difference between the so-called PC4200 and PC4000 modules is just speed and timings: DDR500 modules use CAS2.5
Memory kits are available in 512 and 1GB versions and come in retail package with neon green clear acrylic case and instructions. Do not expect them to be inexpensive, I should add.
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