The forum mod lsdmeasap will have a definitive answer for u soon. But for the meantime I can tell you that the reason for the CPU running too slow is the multiplier is set to 6 and it should be 9. So in BIOS u should enable CPU HOST FREQUENCY and set it too 333 and set multiplier to 9. And disable C.I.A.2 if its enabled.
and also u could try Cpu-Z
CPUID instead of easytune, I dont think Easytune is identifying everything alright cuz I see in ur pic that the name of ur CPU is all wrong, it says "Intel Core 2 Quad E8400" and there is no E8400-quad processor. It should say "Intel Core 2 Duo E8400".
The prob with ur mems I am not sure of, best let the maestro/guru LSDMEASAP answer that.
EDIT.
Good point by fcc56 in the following post. If you DO WANT the cpu to throttle down when u are not putting load on ur computer u can disregard my answer, but if u DO NOT WANT your cpu to throttle down u should do what I wrote and also DISABLE CPU Enhanced Halt and DISABLE CPU EIST Function.