Every XMS module built must pass a stringent battery of tests at its rated speed before being shipped. XMS4400 modules are tested at 550MHz with 3-4-4-8 latency settings at 2.75V. All XMS4400 modules are tested in an Asus P4C800-E dual channel DDR motherboard based on the Intel 875P "Canterwood" chipset. TwinX kits are tested as a matched pair and physically packaged together immediately after passing test, guaranteeing that the customer receives a product that has been verified in the dual channel environment.Corsair released four PC4400 products: 1GB TwinX modules with either black or platinum heatspreader, and 512MB XMS modules with either black or platinum heatspreader.
Details about pricing and availability are unknown but it sure won't be cheap.