Re: Are these the same? (RAM)
KHX8500D2K2/1GN is not the same as KHX8500D2K2/1G. The main differences is the KHX8500D2K2/1GN support for EPP feature. If it's not within the motherboard vendor's QVL, it means the memory module has not been validated by the motherboard vendor.
All motherboards with Intel P35 chipset will only officially support up to DDR2 800, if you would like to have the memory module operate at 1066MHz, you would need to manually adjust the memory speed in the BIOS. Make sure you also increase the memory voltage to 2.2V. However, some system or motherboard configurations may not operate at the published HyperX memory speeds and timing settings.
Kingston Technical Support