Mushkin's XP2-6400 is 800MHz
DDR2 with latencies of 4-4-3-10, and sits between 1.9V-2.1V.  Once techPowerUp! verified the RAM was stable, they tested it up to 568 MHz @ 5-5-5-15 by bumping the voltage up to 2.35V.  They were disappointed that they couldn't get the DIMMS down to 3-2-2-4, but they decided the overclocking capabilities it exhibited makes this RAM a good deal.

"Mushkin is well known for the solid memory kits they make. Today we have the Mushkin XP2-6400 2 GB on our test

bench. These modules are specced to run at DDR2-800 at CL4. With a price of $150 for 2 GB this kit is sure not the

cheapest, but it comes with Micron D9 memory chips. In our testing we saw very nice voltage scaling up to DDR2-1136

at CL5."

Here are some more Memory articles from around the web:

  
Memory

• Mushkin XP2-6400 4GB Memory Kit

  Review @ PCSTATS

• Team Xtreem 2GB PC6400 CL3 Review @

  PC Modding Malaysia

• DDR3 SDRAM: Revolution or

  Evolution? @ X-bit Labs

• Supertalent

  DDR3- 1333mhz @ DH

• Crucial 2GB Ballistix Tracer PC2-8500 DDR2 @ HardwareXL
• Crucial PC2-8500 CL5 Ballistix DDR2 RAM @ Benchmark Reviews
• Crucial Ballistix Tracer

  PC2-8500 DDR2 2GB Memory Kit Review @ ThinkComputers