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MSI 770T-C45 Motherboard ACC settings

post #1 of 5
11/2/09 at 2:13pm
Thread Starter 
Hi
I currently have the above board and a PhenomII 55Be @ 3.6Ghz on Air (Zalman 9500A Cooler). I have been trying to unlock the extra 2 cores on my chip and while I can get the Bios post to show x4 B50 I cannot get the system to boot into Win 7 64Bit. I have set EC Firmware to "Special" and ACC to Auto
and reset the OC to stock 3.1Gh but still cannot get the system to boot into win 7. I also have Win XP Pro 64 installed on a separate HDD and I got the system to boot into it once with CPU-Z showing all 4 cores unlocked but on restarting after installing a program the same failed to start. Any help greatly appreciated.
I am getting really frustrated with this as it appears the chip is capalbe of being unlocked.

OldBarzo
(Douglas)
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post #2 of 5
11/2/09 at 4:25pm
More voltage may help.
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Wrath the Stelthy Dragon
(16 items)
 
Greyhawk the metal dragon.
(8 items)
 
Ryuu, the invisible dragon (router)
(11 items)
 
CPUMotherboardGraphicsRAM
Phenom II X4 940 BE Gigabyte MA790X-UD4P AMD 6790 8 gb gskill PC-8500 @ 800mhz 4-4-4-10 @ 2.1v 
Hard DriveHard DriveHard DriveCooling
Seagate 500 GB 7200.12 Hiachi Coolspin 2 TB (storage) Westren digital Caviar Blue 500 gb (steam) Xiggy Dark kinght on 940  
OSMonitorKeyboardPower
Windows 7 Ultimate x64 23" ASUS VH236H Kinesis advantage Antec 550w  
CaseMouseOther
Antec 900 Razer deathadder IBM model M 
View all
CPUMotherboardGraphicsRAM
T8300 D630 NVS135 (8400 rebranded quattro) 4GB ddr 2. 
Hard DriveOptical DriveOSCase
32 GB SSD Secondary battery Mint 14 Magneseium aluminum alloy laptop case. 
View all
CPUMotherboardGraphicsRAM
AMD Turion ML-40 with heatspreader attached HP laptop socket 754 motherboard with RS480M ch... IGP that I don't use 512 mb ddr 
Hard DriveOptical DriveCoolingOS
4 GB patriot USB 2.0 flash drive None, don't need it. Scythe Ninja Mounted with zip ties.  Pfsense 2.0.2 nanobsd 
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gigabit USB NIC Atheros WLAN NIC Many zip ties. 
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post #3 of 5
11/2/09 at 7:21pm
EDIT - Sorry I didn't notice the "T" in your board name, mine is just a 770-C45, so you may want to just disregard this ......

Just curious, what BIOS you are using?

I have BIOS v1.3 on mine and had no problem installing and running Win7 32 & 64 bit with my X2-550 @ 3.4GHz @ X4, Everything in my bios is set to their defaults except....

CPU Mult = 17
Cool n Quite = Enabled (not Auto)
Firmware=Special
ACC=Auto
Speed Spectrum = Disabled
Onboard Sound = Disabled (have an Audigy 2)

Even at 206x17 I can run it as an X4 with default voltages and Cool n Quite enabled, but of course not all chips are the same, so you might want to try raising the voltages a hair and see if that helps. And of course just because it unlocks doesn't necessarily mean the extra cores are good ones.
Edited by Edgemeal - 11/2/09 at 7:32pm
X2-550 @ 3.4
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X2-550 @ 3.4
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post #4 of 5
11/2/09 at 7:31pm
Try 1.3V or 1.35V @ 3.1GHz or even hard-set the BIOS to 1.4V and go back to 3.6ghz. Could be a bogus core or it will be buggy I'd try a new board oh say Gigabyte or Asus for that particular processor. Oh a brighter note MSI is offering BIOS updates for the new c3 stepping features for the PII 920 & 940's
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post #5 of 5
11/3/09 at 12:22pm
Thread Starter 
Hi All

Thanks for the replies. I already tried upping the CPU and NB voltages and the system just rebooted. If I try setting the ACC manually, what should I set. My board shows from -2 to -12 and +2 to +12 also 0 and auto.

Thanks

OldBarzo
Douglas
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