Overclocking a new Pentium D 920

[gvblake22]

Originally Posted by jph1589

My 520 used to idle at 39-41c with the Scythe Katana 775 on this setup.

The 920 is idling at 24-26c in the exact same setup.

I know the 900 series uses less power than the 800 series, but WOW.....those are water cooling temps.

Is there any history of 900s reporting their temps incorrectly?

It's not a matter of the CPU reporting inaccurate temperatures, it is a matter of the software (or motherboard BIOS) reading inaccurate temps. What are you using to monitor your temps? It is well known that software temperature readings are not very accurate and can be off by 10ºC or more. The best way is to get a thermal probe and display (available for less than $10) and monitor your temperatures that way.

[jph1589]

Originally Posted by gvblake22

It's not a matter of the CPU reporting inaccurate temperatures, it is a matter of the software (or motherboard BIOS) reading inaccurate temps. What are you using to monitor your temps? It is well known that software temperature readings are not very accurate and can be off by 10ºC or more. The best way is to get a thermal probe and display (available for less than $10) and monitor your temperatures that way.

I am using the same software to check temps that I've always used. Speedfan and Nvidia Ntune monitor and PCWizzard.....they all report the same temps.

When I let it sit in the monitor screen in the bios for about 10 minutes is shows a pretty constant 30-32c. That is why I was leaning toward the temp being reported wrong.

I've never used a separate probe. Where do I put it to get an acurate temp without interferring with the Heatsink/Fan.

[Lead Head]

From what i've seen, the NF4 Intel edition has been notorious for not having the best overclocking, especially with dual cores..This is just what i've heard, dont take my word for it though

[RangerXLT8]

I have yet to see an 920 fail to hit ATLEAST 3.8GHz when run in a decent MB. The issue here is the MB.
I suggest this MB.
http://hardwarelogic.com/news/129/AR...006-08-17.html

[jph1589]

Originally Posted by RangerXLT8

I have yet to see an 920 fail to hit ATLEAST 3.8GHz when run in a decent MB. The issue here is the MB.
I suggest this MB.
http://hardwarelogic.com/news/129/AR...006-08-17.html

I like the idea of getting a good motherboard that would allow me to upgrade to C2D when I'm dont playing :>

But, I've sworn off intel chipsets after the 915g and 945g. Those both gave me too many grey hairs.

I would consider an nvidia chipset but probably nothing else. If I could get one of those Nforce590 boards when they come out. Any word on when that is happening?

[Lead Head]

I would honestly stay away from all nVidia intel chipsets until next generation, the 590 is based off the original nF4 intel, basicly it means its not very good, it has already shown poor OCing results.

Get a 965, 975 board, or RD600 based board when they come oout

[Nasgul]

Originally Posted by jph1589

When I push it too far, it actually seems to be posting and booting. I can see lots of hard drive activity just like it is booting. But nothing comes up on the screen. That happens anywhere above 225/900 FSB.

Don't set it to 900mhz, try like 250/750. And RAM should be at least 2.1v or 2.2v.

BTW, if you read 187.5mzh in CPU-Z, then you're at DDR2 750. But you got to bump the Vdimm to 2.1 or 2.2. On a 3:5 ratio that is, except you may not see a 3:5 but some odd number.

Originally Posted by jph1589

But, I've sworn off intel chipsets after the 915g and 945g. Those both gave me too many grey hairs.

The 915G and p45G I understand, as the MoBos that carry that chipset are not beefed up for high overclocking, unlike a 925XE, 955X, 975X and some P965s, now that some P965s have phase power design, like the DS3.

Originally Posted by jph1589

I would consider an nvidia chipset but probably nothing else. If I could get one of those Nforce590 boards when they come out. Any word on when that is happening?

Then you're going to hit a wall again, nForce chipsets cannot handle the high FSB that Intel CPUs are meant to run on.

BTW, Preslers CPUs can do 250fsb x default multi on the stock Vc all day along. I just got my Pentium D 945 and have overclocked it to 4.51ghz but for a 24/7 use it does 4.25ghz. Intel chipsets are great for overclocking but depends on the manufacturer whether or not they beefed up the MoBo. The 945P is a decent overclocker but in the form of a P5LD2 Deluxe, other than that? none.

[jph1589]

Originally Posted by Nasgul

Don't set it to 900mhz, try like 250/750. And RAM should be at least 2.1v or 2.2v.

BTW, if you read 187.5mzh in CPU-Z, then you're at DDR2 750. But you got to bump the Vdimm to 2.1 or 2.2. On a 3:5 ratio that is, except you may not see a 3:5 but some odd number.

The 915G and p45G I understand, as the MoBos that carry that chipset are not beefed up for high overclocking, unlike a 925XE, 955X, 975X and some P965s, now that some P965s have phase power design, like the DS3.

Then you're going to hit a wall again, nForce chipsets cannot handle the high FSB that Intel CPUs are meant to run on.

BTW, Preslers CPUs can do 250fsb x default multi on the stock Vc all day along. I just got my Pentium D 945 and have overclocked it to 4.51ghz but for a 24/7 use it does 4.25ghz. Intel chipsets are great for overclocking but depends on the manufacturer whether or not they beefed up the MoBo. The 945P is a decent overclocker but in the form of a P5LD2 Deluxe, other than that? none.

I seem to remember someone on OC.net who got that kind of advice on his memory and the next day he was using a different computer to type his posts. :!:

I don't have xms memory first of all. It is plain and cheap corsair DDR2 533. I also have the current version of CPUZ and it shows the correct memory speeds for DDR2.

I've already tried the 250mhz FSB. But I haven't tried to run the memory at 750 with a 2.2v. I'd like to be able to sleep tonight without smelling burned silicone :roll: The default voltage for this memory is 1.8v. I've taken it to 2.0 to test it's ability to OC and it won't go higher than 600mhz.

I know better than to get into this with you though. I remember too well.

[Capper]

There are plenty of good, less expensive memory kits out there... XMS is creme of the crop...but I just picked up an OCZ 2GB kit for $138, and kits from GeIL and G.Skill are both very good, and a lot cheaper than Corsair.

[Lead Head]

Im still thinking its the NF4 intel edition....

Is there any chance that the PCI-E bus may be OCing along with the FSB causing instability? like maybe just a weird bug with the PCI-E bus and dual cores on the NF4?