if those newegg specs are correct, that 4gig kit is slower RAM overclocked to ddr2-800 as lists 2.1v as the voltage, heatsinks slapped on to keep them from burning up. Is probably substandard batch of RAM, speed-wise, that they are trying to dump. Assuming the 2.1v listing is accurate. If anyone has that 4gig kit and running fine at 1.8v or 1.9volts at full ddr2-800 speed please let us know.