Pentium D 920 vcore -- BIOS problem?

[HeroesForGhosts]

Hey all,

I am overclocking a Pentium D920. I got it to about 3.4GHz (245 bus and 14x clock multiplier) on the stock voltage, but I can't get it to go any higher than that without crashing during an IntelBurn test. I don't think temp is the problem, i am monitoring with SpeedFan and the temperature always stays well below the danger zone. So I'm thinking the issue is the vcore.

Real problem is -- regardless of what I set the voltage to in the BIOS, both CPUZ and Everest always say my CPU is still at the stock voltage of 1.25v. So it doesn't appear that the BIOS is actually controlling the vcore effectively.

my motherboard is a Foxconn G31MVP. I understand this is kind of a cheap board...could this be the result of a manufacturer defect or some kind of problem in the BIOS? What could I do to fix it?

Help appreciated

[KarmaKiller]

Well it may being doing that because you still have Intel "power saving" features on. Mainly look for "Intel Speedstep,CE1 Halt something or rather" those are the 2 main features you need to disable.
To test to see if this is actually the culprit, set you v-core to something specific in BIOS, then see what it is under load. Then stress the CPU, if the v-core jump to around the number you set in bios, then it's a power saving feature that is doing it.

Also wanted to mention you should use anything other then speedfan for temps. It's pretty notorious for reporting incorrect temps. CoreTemp, RealTemp, Hardware Monitor are all better alternatives. ( I just can't remember which one supports Pent. D's.)

[HeroesForGhosts]

Quote:

Originally Posted by KarmaKiller

Well it may being doing that because you still have Intel "power saving" features on. Mainly look for "Intel Speedstep,CE1 Halt something or rather" those are the 2 main features you need to disable.
To test to see if this is actually the culprit, set you v-core to something specific in BIOS, then see what it is under load. Then stress the CPU, if the v-core jump to around the number you set in bios, then it's a power saving feature that is doing it.

Also wanted to mention you should use anything other then speedfan for temps. It's pretty notorious for reporting incorrect temps. CoreTemp, RealTemp, Hardware Monitor are all better alternatives. ( I just can't remember which one supports Pent. D's.)

Thanks for advice on the BIOS. I will look for those power savers and let you know how it goes.

I have been working with speedfan and in general it seems to report the same temp as the BIOS, so I think it's doing OK. I did try Everest, Real Temp, and Core Temp before picking up speedfan out of desperation. Everest gives the wrong temp, and neither Core or Real Temp support the cpu.

Will look into Hardware Monitor though. Thanks!

[HeroesForGhosts]

Quote:

Originally Posted by KarmaKiller

Well it may being doing that because you still have Intel "power saving" features on. Mainly look for "Intel Speedstep,CE1 Halt something or rather" those are the 2 main features you need to disable.
To test to see if this is actually the culprit, set you v-core to something specific in BIOS, then see what it is under load. Then stress the CPU, if the v-core jump to around the number you set in bios, then it's a power saving feature that is doing it.

Also wanted to mention you should use anything other then speedfan for temps. It's pretty notorious for reporting incorrect temps. CoreTemp, RealTemp, Hardware Monitor are all better alternatives. ( I just can't remember which one supports Pent. D's.)

Quote:

Originally Posted by KarmaKiller

Well it may being doing that because you still have Intel "power saving" features on. Mainly look for "Intel Speedstep,CE1 Halt something or rather" those are the 2 main features you need to disable.
To test to see if this is actually the culprit, set you v-core to something specific in BIOS, then see what it is under load. Then stress the CPU, if the v-core jump to around the number you set in bios, then it's a power saving feature that is doing it.