(05-18-2010, 01:28 AM)glorfindel Wrote: Hello,
I have M3A76-CM mobo and it have SB710 south bridge but I can not find ACC support option in bios. I have AMD 555BE cpu and I want to try to open 2 core more. Asus say they not release a bios for that support. Can anyone help me please?
Thank you.
I don't see any ACC setting from what I can see!?! You may also be interested in this thread as well as I am pretty sure it pertains to your board as well!
http://www.bios-mods.com/forum/misc.php?...Ready-ASUS
But I also googled this->
"Six “hidden pins” on the processors and chipsets are the secret, which, our sources told us, will enable simple overclocking through the southbridge – and accelerate the current processors on demand."
"The SB750 now has a direct 6-pin interface to the AM2+ socket on the motherboard, there are now pins on the Phenom CPU that connect directly to the SB750. These pins were previously unused and are now used as a means of communication between the South Bridge and the CPU. The SB750, in combination with an updated BIOS, can now override some of the CPU's internal settings which can potentially increase the overclocking headroom of the chip.
AMD says that the settings tweak doesn't impact performance and doesn't change thermals or voltages, it simply can allow a Phenom processor to clock higher when overclocking. The BIOS exposes the parameter being changed, which AMD refers to as the Advanced Clock Calibration (ACC) value. Typically this value has a range of -2 to 0, on motherboards with the SB750 that support ACC the value can be set from -12 to +12. Higher numbers should allow for higher clock speeds, while lower values should allow for lower voltages/lower power operation.
Even after further pressuring, AMD wouldn't tell us what this value actually adjusts - simply stating that it makes it easier for the CPU to run at higher speeds. "
http://www.semiaccurate.com/forums/showthread.php?t=47
I really hope we can get to the bottom of this and it's just a bios fix. and they didn't just disable 1 to 6 of those pins to disable the feature. that would be very crappy. Also I need a bit more info, under your advanced settings in the bios. I see CPU Information and it have 0-7 listed in the failsafe and optimal fields in the editor. have you adjusted this setting in your attempts? also there is the C1E setting which controls the cores, in terms of clocking independently of each other or not. I don't know if you have tested this or not to see if it maybe enables previously hidden settings? your input would be helpful! thx
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