Re: problem with oc'ing
+1, you can't go on forever, and maybe your memory is already running close to it's max. You can increase the voltage by doing some hard mods, this involves soldering etc. Just search FX 5700 volt mod in google.
AMD Phenom II X4 955 BE @ 4.0GHz + TU120E lapped - MSI 770-CD45 AM3 - 2x2GB OCZ DDR3 1333MHz - Sapphire HD 4870 - Samsung Spinpoint 500GB 7200RPM 16MB cache HDD - Tagan TG600-BZ Piperock - (Currently open test bed) - Windows Vista Home Premium 64bit.