High-end memory manufacturer G.Skill has begun offering 4x 4GB (16GB) as well as 2x 4GB (8GB) DDR2 PC2-6400 kits for all proffesional users working with memory-hungry applications. G.Skil said that the memories are guaranteed to work on motherboards based on Intel P35, X38 and X48 chipsets and with the majority of AMD chipsets for the AM2 platform (AMD 790FX, 780G, 690G, nForce 590, 570). But before buying these kits, please refer to your motherboard manual and check if it supports that amount of memory. For example NVIDIA's nForce 680i and 780i chipsets support up to 8 GB of memory. The kits are tested to work at DDR2-800 (PC2-6400) speeds with CL5-5-5-15 timings and 1.8V.