I go to change the voltage to my cpu when im OCing set it in the bios but it diesnt actually change???WFT...can someone help...rig in sig. Could it be anything to do with me only having plugged a 4pin power into the 8pin power thing on my mobo....i dont have an 8pin power thing for my PSU...wierd.HELP
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Cant change CPU Voltage
- Thread starter Sam__
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- Apr 4, 2007
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- Litleton, Co
how do you know it doesn't actually change? you using a DMM to check or a program or what?
- Joined
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well programs can miss-read voltage (i think cpu-z and speedfan report my voltage incorrectly). When you're overclocking and upping the voltage in bios, does your computer become unstable at low OC's?
do you own a DMM? if so I'd check your voltage with that.
do you own a DMM? if so I'd check your voltage with that.
- Thread Starter
- #5
i can get it to 3.9 from 3.4 on stock voltage so it doesnt become unstable under small OCs no. DMM?? whats that? You'd think the BOIS would report it right. Iv got the latest version. I can change the voltage to the RAM... well i think i did anyway.lol
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lol ya the motherboard will report what you set it at but you can get voltage droop that the motherboard won't report, but some programs can see. For some reason some programs just don't seem to be able to read things correctly.
DMM is Digital Multi-Meter... it's used to check voltages and resistances and amps manually on the board it's self... i'm guessing you don't have one though.
On a side note, I don't know much about the pentium D's... I was an AMD guy for the past few years... and I have no idea what happens when you plug a 4 pin in where a 8 pin should be.
*edit (when you try to go above 3.9 does it become unstable on stock voltage or are you limited by heat? If thats the case what happens when you go to say 4 and try upping the voltage a few steps?)
DMM is Digital Multi-Meter... it's used to check voltages and resistances and amps manually on the board it's self... i'm guessing you don't have one though.
On a side note, I don't know much about the pentium D's... I was an AMD guy for the past few years... and I have no idea what happens when you plug a 4 pin in where a 8 pin should be.
*edit (when you try to go above 3.9 does it become unstable on stock voltage or are you limited by heat? If thats the case what happens when you go to say 4 and try upping the voltage a few steps?)
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I'm not 100% sure of this, but you can check voltage at a resistor right below and to the right of the ADP3181 IC chip. If you look at the lower right corner of that chip (it's near the LGA socket) there should be 3 yellow (could be a light brown, I'm color blind) resistors two on the right are horizontal and one is vertical... check voltage at that resistor, the vertical one.
Also what you just described kinda sounds like maybe it really isn't changing, or maybe thats where you're getting a big droop in voltage.
Also what you just described kinda sounds like maybe it really isn't changing, or maybe thats where you're getting a big droop in voltage.
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lol cpu-z and speedfan both report my voltage around 1.25v however I know I'm at 1.5v, there's noway my chip would run at 1.25v at 3.33ghz.
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yea mine does... I'm kinda stumped why it wouldn't change when you change it in bios. I've never used that ai program so it's possible that it's reading correctly and it really isn't changing when you set it... you can manualy change voltage by adding a 10k POT to that resister I told you to check and adjust voltage using the POT... but that requires soldering, doubt you wanna go that route.
- Thread Starter
- #14
I dont want to mess up my board the day after i get it lol. I tried setting it to 1.35v and the readings go up to 1.28. at least its gone up something lol....is this at all normal or acceptable? Iv got a reasonably solid power supply so i doubt it could be that.
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You can get it to show 1.28 in your programs? thats up from what 1.23? Or are you using the DMM to check the voltage? Whats your stock voltage in bios?
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have you disabled C1E,EIST,TM1,TM2? When those kick on they will lower your voltage... make sure they're off in bios. Also your board may just have a larger voltage "droop" than most.. all intel chipsets have some droop... nothing wrong with it.
quick edit* you may just have a .07v droop in your board... so think about whatever you set in bios.. subtract .07v and that may be your actual voltage.
quick edit* you may just have a .07v droop in your board... so think about whatever you set in bios.. subtract .07v and that may be your actual voltage.
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