Our test kit was the Kingston 2GB PC2-6400 Dual Kit (2x1GB) with the part number of KHX6400D2LLK2/2G, which comes rated with 4-4-4-12 memory timings. Kingston suggests using 1.95V for their Low Latency PC2-6400 modules, which is lower than competing memory brands running different memory IC’s. For our 2GB test kit 1.9V worked fine and we never once expierenced any lock ups or blue screens of death (BSOD) during our use of the modules. While these voltages are higher than the standard 1.8V that most kits come rated at, don’t be discouraged because even the Intel 975X reference motherboard has BIOS options allowing up to 2.2V for the memory. The just released NVIDIA 590 SLI based motherboards for AMD socket AM2 processors can go up to 2.5V, so 1.95V is nothing to worry about in terms of over volting even for enthusiast memory.
Once the heat spreaders were removed we could read that the Printed Circuit Board (PCB) ID was based off the reference JEDEC design, which is something that Kingston is known to do. While other companies use lower cost PCB’s made by Brain Power Co. Kingston has chosen to go with another source. Kingston informed Legit Reviews that this was done to insure their parts are reliable and perform to JEDEC specifications. After looking at the memory IC’s they were determined to be Elipda IC’s with the part number E5108AG-6E-E. After trying to look up these part numbers on Elpida’s site we were unable to find the part numbers. These are differnt IC’s than what Kingston was using on their standard HyperX DDR2-800 memory line that we reviewed in late 2005. Looking back to the previous article the Kingston HyperX PC2-6400 modules couldn’t even post at 800MHz, so these modules are a huge improvement for Kingston.