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BIOS help needed

Joined
Mar 5, 2006
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System Name Primary Rig
Processor AMD Phenom II X4 940 Deneb 3.0GHz Socket AM2+ 125W Quad-Core Black Edition
Motherboard GIGABYTE GA-MA790GP-DS4H AM2+/AM2 AMD 790GX
Cooling Corsair H50
Memory OCZ Reaper HPC 6GB (3 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Video Card(s) None
Storage SAMSUNG Spinpoint F1 HD103UJ 1TB 7200 RPM SATA
Display(s) Acer 235 - 23"
Case Antec P182
Audio Device(s) Realtek ALC889A - onboard
Power Supply CORSAIR CMPSU-550VX 550W ATX12V V2.2
Software windows 7
#1
I have a Gigabyte GA-MA790XT-UD4P motherboard with a Phenom X2 550 Callisto cpu for my backup rig. Been running the basic BIOS with a modest OC to 3.3 for power consumption reasons.
Anyway, Today with the mindset of upgrading the cpu to an X6 1055... I updated the BIOS to F8. This went pretty smoothly. Then all these options in the BIOS became available. The EC firmware option on Hybrid basically turned this CPU into an X4 and seems to be running fine.
The CPU is identified as B50 on Coretemp. However there are no temp readings!!

Now I have a question about all these other options:

1. Advanced Clock Calib - on auto for now - leave it there or modify? What is this supposed to do?

2. CPU core control - On auto; change or not; what does this do?
3. As I am still exploring this BIOS, Any other setting that you guys have found to be good for OCing. The system specs are in my sig.

Thanks for the help!!
 
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Location
TR
Processor C2duo e6750@ 2800mhz
Motherboard GA-P43T-ES3G
Cooling Xigmatek S1283
Memory 2x2Gb Kingstone HyperX DDR3 1600 (KHX1600C9D3K2/4GX )
Video Card(s) HIS HD 6870
Storage samsung HD103SJ
Case Xigmatek Utgard
Audio Device(s) X-FI Titanium Pci-e
Power Supply Xigmatek NRP-PC702 700W
Software win7 ultimate -64bit
#2
1-It is used to enable core unlocking mostly ,2nd iirc you can get higher oc when it is enabled (there was an article at anand when acc first introduced ) .
Edit :I thought you had X6 ,keep it enabled to use your x2 550 as X4
2-It is used to control cpu cores .You can disable defected cpu core(s) with this option with unlocked cpu i.e you unlocked dual core cpu and got a quad but one core is not stable than you can disable defected core and can use 3 cores .
 
Last edited:
Joined
Mar 5, 2006
Messages
270 (0.06/day)
Likes
7
System Name Primary Rig
Processor AMD Phenom II X4 940 Deneb 3.0GHz Socket AM2+ 125W Quad-Core Black Edition
Motherboard GIGABYTE GA-MA790GP-DS4H AM2+/AM2 AMD 790GX
Cooling Corsair H50
Memory OCZ Reaper HPC 6GB (3 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Video Card(s) None
Storage SAMSUNG Spinpoint F1 HD103UJ 1TB 7200 RPM SATA
Display(s) Acer 235 - 23"
Case Antec P182
Audio Device(s) Realtek ALC889A - onboard
Power Supply CORSAIR CMPSU-550VX 550W ATX12V V2.2
Software windows 7
#3
Thank you! Makes sense.
Now how do I know if a core is defective or which one is defective?
I ran prime 95 briefly with all 4 workers and the computer froze.
But it boots up fine, runs Fritz chess marks ok with a score of 17. I havent done any benchmarking with it yet...
 
Joined
Feb 24, 2009
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System Name Money Hole
Processor Core i7 970
Motherboard Asus P6T6 WS Revolution
Cooling Noctua UH-D14
Memory 2133Mhz 12GB (3x4GB) Mushkin 998991
Video Card(s) Sapphire Tri-X OC R9 290X
Storage Samsung 1TB 850 Evo
Display(s) 3x Acer KG240A 144hz
Case CM HAF 932
Audio Device(s) ADI (onboard)
Power Supply Enermax Revolution 85+ 1050w
Mouse Logitech G602
Keyboard Logitech G710+
Software Windows 10 Professional x64
#4
The reason you don't see the core temperature is because the way ACC works it works in the same data area. ACC is a function of the SB and there are a few pins that connect the SB to the cpu directly. The board has a good cpu temperature sensor. Add 3C or so to that and you should be close to core temperature.

If you freeze with P95 then your not stable with all 4 cores. You may need more vcore, cpu-nb, or maybe sb volts only testing will tell. Though if you're only getting 3.3 on stock voltage that doesn't sound like a good chip (if it is a C3 stepping). Try bumping NB (not cpu-nb) up to 1.2v and see if that doesn't help when pushing HTT.

As for the numbers for ACC they have to do with system clocks on the board. As you overclock the cpu when pushing HTT or unlocking cores there are other latencies that might need changing. What exactly they change AMD has kept silent about. Fwiw I've found that changing just one of them off 0 to -2% negatively effected PC Vantage scores but it was only certain ones. If you changed it back to 0 and another to -2% the negative effect would go away. It was very repeatable. It could change the score by 400 points when I ran the full suite.