I am using an older (2006) laptop, running Windows 7 Pro 64 Bit, a Mobile AMD Sempron 3400+ 1.8GHz processor and 4GB of matching Kingston DDR2 667MHz RAM. I know that according to the standards set by JEDEC that DDR2 667MHz is clocked at 333MHz (though the true reading says it's around 301MHz according to CPU-Z). I am running in dual channel (obviously) but was wondering since I am running Dual Channel and even though CPU-Z says I'm running at 333MHz, am I truly utilizing the whole 667MHz? The FSB on my computer is rated at 1600MHz (checked the specs at the manufacturer website and at AMD) so if I am, I know the FSB is fast enough to run it, and won't be bottle-necked. Also, if I'm utilizing the whole 667MHz, why doesn't CPU-Z or any other hardware identifiers show the actual combined channels as 667MHz per stick of RAM?