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cecco

BIOS vs. real voltage (RAM)

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I've been changing vdimm through the BIOS even though my Tagan 480W has an unmodded 3.3v rail.

 

If I change the BIOS to show 3.6v, the real voltage will actually be 3.1v is that correct?

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That is what I'm trying to figure out. I was looking at the OCZ forums and it seemed to me that unless your PSU was modded to increase voltage on its 3.3v rail to say 3.7v, or you had one of those PSUs that have adjustable rails, the vdimm couldn't go above 3.1v since it couldn't draw more v than the motherboard was provided with by the rail.

 

Am I wrong in thinking this?

 

Thanks

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What you say sounds logical enough but my mem aren't stable at 250FSB unless i set the voltage to 3,5v if i set it to 3,3 i ain't stable and SmartGuardian also says that my mem gets 3,5v so i guess i must get the 3,5v.

 

Hope that someone has a better explanation than mine:P

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I've been changing vdimm through the BIOS even though my Tagan 480W has an unmodded 3.3v rail.

 

If I change the BIOS to show 3.6v, the real voltage will actually be 3.1v is that correct?

 

 

You NEED to make a sig with your system specs.. we dont even know what mobo you have..

 

:rolleyes:

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please check the rules and the Important Info threads stuck to the top of this section.

 

If you are looking for help, reading this is the most important first-step for you to take.

 

this helps us tremendously to help you solve your issue if we can see what is in your system every time you post:

 

 

 

PLEASE SEE THIS LINK!:

http://www.dfi-street.com/forum/showpost.p...701&postcount=2

 

 

 

Be as thorough as possible please. Voltages, timings, settings, bios version, etc.

 

The more information you give us about the problem, and the more details about your hardware in your sig = more help we can give you.

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Ok Angry_Games, sorry about that. :P

 

Back to the question, does a PSU have to have a modifiable rail setting or be modded in order for me to get more volts to the motherboard and in turn the ram?

 

Thanks.

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Ok Angry_Games, sorry about that. :P

 

Back to the question, does a PSU have to have a modifiable rail setting or be modded in order for me to get more volts to the motherboard and in turn the ram?

 

Thanks.

 

P.S. Still trying to the settings below prime95 stable. :)

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You dont need to mod the psu rail to make the vdimm go higher.. You need to change the vdimm jumper on the top right of the mobo to make your vdimm feed off of the 5v rail..

 

Its a cool idea to make sure the top right of the mobo is cooled good when using the 5v rail option..

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Ok, I got the jumper in the right position. I just wanted to make sure about the PSU. Thanks for correcting me.

 

Now I need to get my overclock stable and see if I can reach 250x11.

 

Suggestions are welcome as always ;)

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