2.8 Prescott Heating Problem

infinitevalence · Post by **infinitevalence** » Sat Jun 26, 2004 8:55 pm

i always try to put as much of my cabeling out of the way as i can. i also fold my ide cables, if im not using rounded ones, i fold them aganst the back pannel of my case and then fold them so they do not restrict air flow when i attach them to my drives. the more air flow the better and less cableing you have blocking that air from moving the better.

BoxsterS258 · Post by **BoxsterS258** » Sat Jun 26, 2004 9:52 pm

Where is the ambient temperature inside the case measured at? For you people with air cooling, does your room get pretty hot with the comp running for a long time?

infinitevalence · Post by **infinitevalence** » Sat Jun 26, 2004 10:17 pm

The ambiant temp is mesured in differnt places on each mobo so i cant say where it is on yours. As for tempretures in my room when i have both my main rig and my server runing with both monitors on it gets about 5c hotter than the rest of the house. This is nice in the winter but it sucks right now.

Bio-Hazard · Post by **Bio-Hazard** » Sat Jun 26, 2004 11:30 pm

When my A/C is off the room gets pretty hot, it's been over 30c before I turned on the A/C. But I've got 3 rigs running and 2 of them are folding 24/7, so they're always at 100%............. :twisted:

BoxsterS258 · Post by **BoxsterS258** » Sun Jun 27, 2004 9:43 am

This is ticking me off. I read on other sites people with the same zalman with an overclocked 3.0 prescott gettin 55 at full load and in the 40's idle. For applying thermal grease, all you do is put a small dab in the middle of the processor?

LVCapo · Post by **LVCapo** » Sun Jun 27, 2004 12:49 pm

http://www.arcticsilver.com/arctic_silv ... ctions.htm

BoxsterS258 · Post by **BoxsterS258** » Sun Jun 27, 2004 1:23 pm

I took the case cover off, and it idles at 49. Wonder what will happen after arctic silver 5 and maybe lapping the chip.

LVCapo · Post by **LVCapo** » Sun Jun 27, 2004 3:29 pm

That really isn't too bad, once the AS5 cures, it should go down another 1-2 C. Lapping my CPU dropped my temps around 5C. Just take your time and do it right

BoxsterS258 · Post by **BoxsterS258** » Sun Jun 27, 2004 4:14 pm

BIG problem, when I rev my Honda S2000 up to 8300 rpm, it overheats. What can I do? Im thinking about taking the hood off and installing a few fans here and there.

Anyways, thanks for everyones help.

infinitevalence · Post by **infinitevalence** » Sun Jun 27, 2004 4:29 pm

you could try lapping your engin and using copper heatsinks to cool it down.

BoxsterS258 · Post by **BoxsterS258** » Sun Jun 27, 2004 4:34 pm

I have a WD1200JB that runs at about 36C to 40C. Is this normal? I got it at for 50 bucks after rebate; im sure infinitevalence spent much more.

infinitevalence · Post by **infinitevalence** » Sun Jun 27, 2004 4:51 pm

Im starting to wonder? what is the tempreture in your room, because that seems a little hot for that drive. Mine can get warm but i dont know about 40c, also yes i paid more for my drive but i also got it when they were new and cost $120.

According to StorageReview.com the 120JB should be ~17c higher than the ambiant tempreture.

BoxsterS258 · Post by **BoxsterS258** » Sun Jun 27, 2004 4:57 pm

Room temp is about 82F. 40C was at working temp.

infinitevalence · Post by **infinitevalence** » Sun Jun 27, 2004 5:11 pm

Then thats about right. I think this is the reason that your seeing such high tempretures in your computer. When your water or air cooling your computer can never get cooler than the ambiant tempreture of the room its in. this means that the tempreture in you box is going to start at 28c and go up from there. Your heatsink has a c/w of .18 so 100w x 0.18 = 18 C thats how much your tempreture is going to be over ambiant, therefor your cpu tempreture should be around 46c. if you lower your room tempreture to 74f (23c) then it would be 41c.

BoxsterS258 · Post by **BoxsterS258** » Sat Jul 10, 2004 7:25 pm

good news. My computer desk is one of those that cover your cpu on all sides cept the front. I made a big hole in the back with a power saw for hot air exhaust, and not i idle at about 46 and load about 10C higher. This is without AS5.

infinitevalence · Post by **infinitevalence** » Sat Jul 10, 2004 9:59 pm

Cool. literlaly. The more cool air you can get from the room the cooler you cpu will be.

Post by **Apoptosis** » Sun Jul 11, 2004 9:22 am

My computer desk is one of those that cover your cpu on all sides cept the front.

That's a cave, not a computer desk!

wizard · Post by **wizard** » Sun Aug 15, 2004 12:35 pm

I have a Intel P4C Prescott 3.2ghz (not o/c) with a CNPS7000-Cu running full speed 2500rpm in a case with 5 fans (3 exhausting, 2 blowing in). I'm even using Arctic Silver 5 thermal paste and getting extremely high temperatures:

70-71 C. when running under a load.
53-55 C. idle
38 C. inside case
29 C. outside ambient air temp.

I get similar temperatures using the stock Intel HSF, but the added plus with the Zalman combo is that it is a LOT quieter.

My question is:

1) Is this abnormally high? I know the Prescott runs hot, it shouldn't be this hot! From what I've read the TCmax is something like 73 C, so this is getting pretty darn close

2) Does Zalman or anyone else make higher speed replacement fan for the CNPS7000-Cu that can run at a higher speed than 2500rpm. It appears that the HSF combo is insufficient to provide adequate cooling. A higher speed fan that is capable of going up to +4500 rpm might be the answer.

LVCapo · Post by **LVCapo** » Sun Aug 15, 2004 3:24 pm

I would replace that Zalman fan. It is not good enough to adequately cool a Prescott.
I Use an SP-94 with a 92mm Panaflo on my Pressie and it idles at 34C while overclocked to 3.61 at 1.45 V-Core. I had a Zalman on mine and it used to idle at 48-50C, so there is obviously something wrong with the way yours is working. My first thought is the heatsink isn't seated properly. The mounting brackets for that thing are kind of a pain, the sometimes slip to one side. If it is seated properly, my next thouuht is that you are using too much paste, not enough, or applied it wrong. Sometimes you don't apply it evenly which can cause air bubbles, those air bubbles can super-heat, which also isn't good.
If everything is done right, I would look at the type of board you are using. Is it masde for a Pressie? Some boards say they are compatible, in theory they are, but their circuitry can't handle the heat generated by the CPU.

wizard · Post by **wizard** » Sun Aug 15, 2004 3:48 pm

I've since rearranged some of the case fans so that I have 2 exhausting from the back and one on the side sucking in blowing air over the cpu, and one sucking in on the front.

I've found this new arrangement has really dropped the cpu temp but increased the inside case temp. I'm now getting:

50-53C cpu idle
62-63C cpu under load
41C motherboard/inside case

That's a big improvement (8-10C cooler)! I just have to figure out a way to drop the internal case temp a bit more and I'll be happy. It goes to show you that case design/fan placement make all the difference when it comes to cooling.

I'm going to look some additional mods and see if I can improve on it some more. Maybe some ducting to exhaust the cpu fan air directly to directly outside the case. Any pointers on good case mods?