I bought a d4999t from HP last month; Q6700, 2 Gb PC-2 800 MHz, Vista home Premium, etc... I looked into overclocking this system, however, the motherboard is a generic HP ASUSTek and there is nothing in the BIOS to change. My problem seems to be the when I ran SANDRA's benchmarking suite I get pretty good numbers for everything except for the memory benchmarks. I downloaded CPU-Z and it shows the memory is running at 333.3x2 MHz. HP's information said that this memory will run at 800 MHz and I even went and bought 2x2 Gb Corsair, same specs as above. I benchmarked the original (Hyundai) memory alone, the Corsair alone and all 4 sticks combined. All 3 benchmarks show the same 333.3 MHz. I have now exchanged 4 emails with HP's support. First they said I was imagining this. Secondly they said that I had bought the wrong memory and this morning they wrote back and said it basically does not matter if I get my information from SANDRA and/or CPU-Z because these are third party to HP and they do not recognize their results. I bought an extended warranty and in my latest email to them I demanded that they come and fix my computer's problem or else tell me which benchmarking utility I can use to confirm my results. BTW, I am using SANDRA's professional business suite. As to my choice of computers, I will not buy a Dell, Gateway has a bad rep and I wanted more than a generic would give me this time. As to a build my own, I have done that in the past, however this old man is not getting younger and besides my hands shake and wouldn't that be fun attaching all those parts to the motherboard and all. Any ideas? HP calls this motherboard burbank and there is no information on ASUSTek's site about it. With this last email to HP I asked for the schematics to burbank, and if necessary I might be able to do the right jumpers to get me back to 800 MHz.