i use mobo GA-MA74GMT-S2 pair with phenom ii be720. this mobo come with acc feature.

unlock to phrnom ii x4 20 but freeze in prime95.

when set manually enable core in bios, each core stable in prime 95 ( combo core #0, 1, 2 and combo core #0, 1, 3)
so basically all core usable but cant stand if enable all core #0, 1, 2, 3

is certain mobo with acc cant support unlock? if mobo limit i might find other mobo.
or certain prob with processor. oc can stable 3 core at 3.5ghz with 1.37v


and help me know if am3 retention bracket at mobo can change to amd 939 compatibility. need to fit zalman hsf

*note: pls my dear mod give me a link if thered is already discussed/ solved. i no idea

This post has been edited by DG41: Aug 1 2011, 12:21 AM

You may refer here, hope this help

thx for the link and i expecting more. maybe GA-MA74GMT-S2 user got some source of custom bios (already falsh bios to first but keep freeze)

Thread closed. There is an existing thread discussing on unlock cores. Use that.