Q9400 = Crap
I don't suggest spending ANY money on any Socket 775 parts as its a dead platform
Nah not totally I hate when people say 775 is dead yes they are not gonna be makeing them anymore but the top end of the 775 CPU's are very good CPUs a Q9550 will offer about the same as a Phenom II 955 and a Q9650 will keep up with an I5 750 for the most part. If you have a microcenter near by they have Q9550's for $179.99 or was it $189.99 but it was a pretty good price for it eithier way. Upgrading to that will give your rig a few more years of solid performance and will be cheaper then upgrading to a new platform. Any move in Intell will require DDR3 RAM and on the AMD side you would have to go with a Phenom II 955 IMO to make it worth it. So its not dead its just not being made anymore.