Overclocking a new Pentium D 920

[gvblake22]

What's the ambient temperature in your room?
You might just have a very well set up cooling system and your actual temps are fairly close to what you are seeing displayed...

[jph1589]

Originally Posted by gvblake22

What's the ambient temperature in your room?
You might just have a very well set up cooling system and your actual temps are fairly close to what you are seeing displayed...

The room temp is about 76f.

I have 3 antec tri-speed 120mm case fans.....all on low speed. The one in back is blowing out. The front one is blowing out also. The side one is blowing in. I have the blank taken out of the PCI slot under my video card so that it sucks air in there. The video card has a zalman heatpipe on it.

Video Card temp.....41-43c
Motherboard temp...34-35c
Both Harddrives.......37c
CPU temp................24c and load is 37 tops.
Room temp..............76F /24.4c

No way.....the cpu is at room temp LOL!!

[gvblake22]

Originally Posted by jph1589

Video Card temp.....41-43c
Motherboard temp...34-35c
Both Harddrives.......37c
CPU temp................24c and load is 37 tops.
Room temp..............76F /24.4c

No way.....the cpu is at room temp LOL!!

AAHHH, yes, probably right. It would be hard to believe that the processor is running cooler than the motherboard and hard drives........
I say your next investment might want to be a temperature monitor of some kind :thup:

[polobunny]

Originally Posted by jph1589

I have 3 antec tri-speed 120mm case fans.....all on low speed. The one in back is blowing out. The front one is blowing out also. The side one is blowing in. I have the blank taken out of the PCI slot under my video card so that it sucks air in there.

Your cooling is not proper. The way the fans are, it's going in negative pressure which isn't very great. Try to check with a sensor like Blake said, just incase. If temps are really that low, then good for you. :D

I'm betting on around 42c load.

[jph1589]

"it's going in negative pressure which isn't very great"

The negative pressure is on purpose, so that it will pull air in across the video card.

I originally had the front fan blowing in and the back blowing out and the side blowing in.........the way most people do it. All that did was blow the heat from the hard drives across the motherboard and cpu and make everything hotter. I've tried every combination of directions and speeds and this one came out much lower on all components. The MB is about 2c lower and the disks are about 3c lower with it set up this way.

On the CPU issue......I've done searches on the net to see if anyone else has reported problems with the temp diode in Pentium D and I haven't found anything.

I'll probably order the sensor tomorrow.

[gvblake22]

Yeah, if done correctly, negative pressure (more exhaust than intake) can cool just as well as positive (more intake than exhaust). It is all just a matter of doing what jph1589 did and try all of the possible fan placement options and see which yields the best temps.

Either way, nice job, and it looks like you've got a very nice setup going there :thup:

[polobunny]

Originally Posted by gvblake22

Yeah, if done correctly, negative pressure (more exhaust than intake) can cool just as well as positive (more intake than exhaust). It is all just a matter of doing what jph1589 did and try all of the possible fan placement options and see which yields the best temps.

Either way, nice job, and it looks like you've got a very nice setup going there :thup:

I heard positive was normally better than negative, to the same scale obviously.
Even better, get the same air in, out. :P

[Lead Head]

on die sensors should be never considered acuratem one way, although very risky is actually to have a very narrow and shallow channel cut in the cpu ihs and put a small tempsensor into the channel and seal it with thermal expoxy, then connect the probe to a temp moniter, i've have seen it done on some forums, it works quitre well, but still risky

[jph1589]

I am still testing this to make sure it is completely stable.

http://valid.x86-secret.com/show_oc?id=115353

I had to increase the vcore from auto to 1.375

I think I'm gonna need a bigger power supply LOL

I"m gonna start calling this the little nforce4 for intel that COULD!!

**edit Even with putting the vcore up to 1.4v i kept getting very random reboots. I think that may indeed be a powersupply thing. Wouldn't be the end of the world if I got a new ATX/EPS power supply. That would open up a lot of doors on the motherboard side. Oh well....looks like 1042fsb is the tops for now. It is perfectly stable there.

But for the record........my super pi times are still so bad compared to the Core 2 stuff I've seen........I"m not even going to embarass myself by posting them.

[polobunny]

Originally Posted by jph1589

I am still testing this to make sure it is completely stable.

http://valid.x86-secret.com/show_oc?id=115353

I had to increase the vcore from auto to 1.375

I think I'm gonna need a bigger power supply LOL

I"m gonna start calling this the little nforce4 for intel that COULD!!

**edit Even with putting the vcore up to 1.4v i kept getting very random reboots. I think that may indeed be a powersupply thing. Wouldn't be the end of the world if I got a new ATX/EPS power supply. That would open up a lot of doors on the motherboard side. Oh well....looks like 1042fsb is the tops for now. It is perfectly stable there.

But for the record........my super pi times are still so bad compared to the Core 2 stuff I've seen........I"m not even going to embarass myself by posting them.

Even crazy OC'ed X2's on LN2 SuperPi times look stupid compared to Core 2 Duo, so...