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Help OCing my 955, it's making me cranky >:(

post #1 of 18
Thread Starter 
Hey guys,

Temps here have finally dropped enough that I can start to OC my 955, so today I went into the BIOS, set everything to stock settings (I'll put a list of my settings further down) and started OCing. I raised the multi to 17x (3400MHz) and raised the NB multi from 10x (2000MHz) to 11x (2200MHz). It stressed fine, no worries, no overvolting (in fact I had the CPU at 1.325, not 1.4 like stock BIOS settings).

All well and good, I set the Multi to 18x (3600MHz) and the NB multi to 12x (2400MHz). I got a message saying something along the lines of "BIOS settings may not reflect H/W settings". I reset the CMOS at this point, went back in and tried it without changing any voltage settings. It did the same thing. I thought it might have been an error and set it to 19x (3800MHz) and 13x (2600MHz). That didn't work so I tried NB at 14x (2800MHz) and it wouldn't even POST.

I reset the CMOS again, changed settings again and decided to try using the FSB. I put the FSB to 250, to keep my RAM at 1333, and changed the multipliers accordingly, so that as before, I had the CPU at 3400, NB at 2200, and HT Link at 2000. Same error. I went into the BIOS and noticed that it had taken the FSB off Auto and reverted to 200. I put it back to manual and it restored the 250 I had before. Tried bumping both NB and CPU voltages by 1 step (0.025v) and got the same message. Once again, the FSB had been returned to Auto.

I've tried everything I can think of. Here are the settings I used initially (for stock speeds), which are for the most part exactly the same as stock BIOS settings, I just don't like leaving them on Auto. Where I've changed it, the stock setting has been listed in brackets.

CPU Clock Ratio - 16x
CPU NB Freq. - 10x
CPU Host Clock Control - Manual (Auto)
CPU Frequency - 200
PCIe Clock - 100
PCIe Spread Spectrum - Disabled (Enabled)
HT Link Width - 16bit (Auto)
HT Link Frequency - 10x
Memory Clock - 6.66x (or 6.67, I don't remember, either way it's 1333)

CPU PLL Voltage - 2.500v
DRAM Voltage - 1.510v
DDR VTT Voltage - 0.750v
NB Voltage - 1.100v
HT Link Voltage - 1.210v
NB/PCIe/PLL Voltage - 1.810v
CPU NB VID Voltage - 1.100v
CPU Voltage - 1.325v (1.400v)

AMD C1E Support - Disabled (Enabled)
Cool And Quiet - Disabled (Enabled)

I don't understand what is going wrong, if you like I can get a picture of my BIOS page with the settings and the error message I get.

Thanks very much in advance
LAF
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post #2 of 18
1.325v vcore is simply not enough to sustain a 3.8GHz oc. Set multi to 18 or 17.5 and set fsb in a way that you get 3.8GHz. Set cpu-nb to at least 2400MHz.
vcore --- should be stable somewhere around 1.42v-1.46v
cpu-nb voltage --- 1.3-1.35v
See if it works out.

Also..... why are you running a 1600mhz ram at 1333MHz, I may be wrong but it seems that way from the sig rig.
    
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post #3 of 18
Thread Starter 
Quote:
Originally Posted by leopold1985 View Post
1.325v vcore is simply not enough to sustain a 3.8GHz oc. Set multi to 18 or 17.5 and set fsb in a way that you get 3.8GHz. Set cpu-nb to at least 2400MHz.
vcore --- should be stable somewhere around 1.42v-1.46v
cpu-nb voltage --- 1.3-1.35v
See if it works out.

Also..... why are you running a 1600mhz ram at 1333MHz, I may be wrong but it seems that way from the sig rig.
I forgot to mention I did try putting it back to 1.4, and higher. It's not like it's unstable though, I don't even have a chance to test stability, that's the issue.

My mobo has multi in steps of 1, so 17.5 is no issue, and you'll notice that the 1600MHz RAM is a listed upgrade, not what I am currently using.

I'll try with vcore at 1.42 for starters and while I'm at it I'll copy down the exact error message I get.
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post #4 of 18
Try CPU ratio 18, CPU Volt @ 1.40V, keep everything else @ stock. Trying to figure out your CPU volt for 3.6GHz. If unable to load Windows raise your CPU volt little by little
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post #5 of 18
Thread Starter 
I know how to overclock guys, you're missing my point. It displays a message saying that the set values are different to what is actually happening, resets my FSB selection every restart, and sometimes won't POST, or will take ages to POST.

I tried it at 1.425v and it BSOD'ed while booting. I got into stressing at 1.45v but it got to 63C so I stopped it, and while going back into the BIOS to change it back to stock, because temps are still too high, I got the error message again.
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post #6 of 18
Are you using the latest bios?
    
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post #7 of 18
Thread Starter 
Yes
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post #8 of 18
Try raising your CPU-NB voltage. Not vcore.

Another person suggested this but no idea if you tried it.

You're running at stock voltage from your OP.

At 3.8 ghz, I need to push the CPU-NB voltage up (even if the NB frequency is stock).

At 2600 NB-freq I need at least 1.4v's on the CPU-NB. Most people seem to run around 1.3-1.4v depending what their CPU speed is.

Edit: My Gigabyte resets to fail-safe mode if my computer won't post. Usually due to low vcore or CPU-NB voltage.
Edited by evilferret - 2/13/11 at 5:52am
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post #9 of 18
Thread Starter 
Quote:
Originally Posted by evilferret View Post
Try raising your CPU-NB voltage. Not vcore.

Another person suggested this but no idea if you tried it.

You're running at stock voltage from your OP.

At 3.8 ghz, I need to push the CPU-NB voltage up (even if the NB frequency is stock).

At 2600 NB-freq I need at least 1.4v's on the CPU-NB. Most people seem to run around 1.3-1.4v depending what their CPU speed is.

Edit: My Gigabyte resets to fail-safe mode if my computer won't post. Usually due to low vcore or CPU-NB voltage.
So you're saying that it will reset the FSB and display this message automatically if the voltage is too low?

THAT is my question. Not whether the voltage is too low, it's more to do with the error message.

No not running at stock volts, I tried bumping it and the post 3 above yours indicates what happened at that point.
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post #10 of 18
I don't have your exact motherboard but mine is the cheaper model of the same line so I would guess yes?

I get this message stating something nothing posting and resetting to fail safe mode. Which just resets all my settings and goes to stock settings.

Sorry, its been awhile since I saw the exact message.

Just get used to saving your BIOS settings to the CMOS. Gigabyte gives you like 10 save slots? Sorry forgot how many exactly, I know I currently have 6 settings on my CMOS right now.

Good luck!
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