QitUP

Hello, I am having some problems with OC'ing my phenom 940. chipset is nividia 780a and the mobo is an asus m3n-ht deluxe. The problem is this: I can get it overclocked, but if I switch my ram to 1066 from the ddr2 800 thats when the problems occur, are there any settings i should try fooling around with?
Its perfectly stable without changing the memory options, but if I i switch it to 1066 it screws up even if I only up the CPU by 1mhz, but is stable at stock speeds. I just find it odd that 1mhz would cause that, maybe its my mobo?

robbo2

I find this board to be sensitive about what 1066 ram it actually likes. I use dominators an they work great but you have to set the voltage to the factory settings. 2.1 volts for my dominators.
I have a cpu-z link in my sig if you want to see the ram settings also.

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test tube

The memory speeds listed in the BIOS are not speeds but rather RAM:FSB dividers.

Memory clock:FSB Clock
667mhz:200mhz (3.33:1)
800mhz:200mhz (4:1)
1066mhz:200mhz (5.33:1)

Therefore if you change the FSB by 1 mhz at a 1066mhz memory speed in the BIOS, you're overclocking your memory by 5.33mhz.

The easy way to overclock is to increase your multiplier. The multiplier is the number by which the FSB is multiplied to get your core clock speed (normally in the 940 it is 200mhz x 15.0 multiplier = 3000ghz).

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QitUP

I actually had my friends dominator ram in my computer, and it was giving me the same issues, any change in overclocking at all caused the system not to boot at all, I've managed to get it to boot now by changing some settings that were auto to other things, One time it was botting,it gave me a corrupted file check sum and then anothertime when it it got into windows everything glitched out.

test tube

Could you please tell us your BIOS settings?

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robbo2

Are you sure you have your ram set to the correct votages? That was the problem I was getting when I undervolted my ram.

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QitUP

I have tried having the ram set to 1066@5-5-5-15 and I've also used the SLI-Memory option to let it auto config all the settings, I havn't screwed with the voltages, I'm pretty sure its running at 2.1 though.

robbo2

The default is 1.8 that is not enough to run your ram at 1066 you have to set it to the manufacturers settings. I pretty much promise this will fix it.

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QitUP

Lol, wow, all it was was the ram voltages, now its booting fine. Don't know why I didn't think of that, I guess I just figured that 2.1 was fine, or that sli-memory would have set the voltages high enough. Thanks.

QitUP

and hey, since you have the same mobo, any idea what this TMPIN2 that sometimes shows up in HWMonitor, depending on how it feels, the temperature goes eradic and runs hot.