Memory maker Micron has launched its 0.11 micron high density 512Mb 400MHz DDR SDRAM chip, the company said yesterday.

The chip is fully compliant with JEDEC's DDR 400 specification, said Micron. DDR 400 has yet to become an approved JEDEC standard, however.

"We expect to validate this component and module by mid-2003," said Bob Donnelly, Vice President of Micron's Computing and Consumer Group, in a statement.

Last week, Micron unveiled the world's first 4GB DDR DIMM. Samsung yesterday announced it had begun mass production of its 512Mb DDR 2 part. ®

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