The DDR2 speed battle continues with official product releases by Corsair and Kingston. Both companies claim their modules are the "world's fastest".

Corsair Memory, Inc.unveiled the DDR2800 MHz memory modules, claimed to be optimized for the latest NVIDIA nForceTM 4 SLITM Intel Edition platform.

The new XMS2 6400 modules feature carefully selected DRAMs that have passed the strictest validation process. The end result is that consumers are able to enjoy blazing fast DDR2 800 memory that promises to deliver a significant performance boost without compromising stability or reliability.

The XMS2 6400 family includes:
CM2X512A-6400 Single 512MB module, DDR800, 5-5-5-12
TWIN2X1024A-6400 Matched pair of 512MB modules, DDR800, 5-5-5-12, 1GB kit

On the other hand, Kingston releases its DDR2 proposal running at 750MHz. The HyperX modules capable of achieving speeds of 750MHz.

Kingston?s HyperX KHX6000D2-series of memory modules are rated to operate at 750MHz with CL4 4-4-12 timings and 1.9V voltage. The products were first described in late January, 2005, and were said not to feature any expensive and specially designed PCBs, but used standard JEDEC-certified print-circuit boards.

HyperX PC2-6000 modules are available immediately in 256MB, 512MB, and 1GB configurations, but in limited quantities, the company said.

Kingston originally indicated that one of the problems with the launch of commercial high-speed memory modules was the absence of mainboards that could stably operate with 750MHz memory: initially only ASUS P5AD2-E could easily handle 750MHz DDR2, while even ABIT?s Fatal1ty i925XE could not be fully stable with such speeds. Now it is expected that the HyperX PC2-6000 modules are compatible with broader set of mainboards.