RAM for DDR3 and AM2 socket design
RAM for DDR3 and AM2 socket design
You're asking about the Phenom II X4 840's CPU features. It seems this chip has certain restrictions that might not be fully unlocked across all boards or BIOS versions. Check the specific board documentation and BIOS settings to see if unlocking is possible.
Typically, most OC boards enable processors, usually not original equipment manufacturer models. The X4 840 doesn't unlock cores but adds 2mb of cache. CPU part numbers that end in AC will work, while Thuban X4 models ending in CB can reach 6 cores.
I understand from the boards BIOS information. It’s helpful to know this in general, even if it doesn’t apply here. Thanks!
Search for affordable Am2+ or Am3+ motherboards. They seem to be quite inexpensive. DDR3 RAM might also be budget-friendly. You could consider upgrading the board and RAM later to experiment with it.