My PC (5 years of age) was equipped with two similar strips (the 1GB version of Kingston - KVR667D2N5 / 1G - RAM memory - DDR2 667 - 1 GB KVR + CL5). Wanting to boost a little, so I bought the same reference in 2GB version: here I am now with 6GB of RAM that work perfectly together. Nothing to report despite heavy use 64-bit Linux. Beautiful evidence of longevity and compatibility in the long term, especially for how fast the technologies and standards change in hardware. As more beat the price ... no complaints.
