A 4.1 GHz Dual Core at $130 - Can it be True?

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I'm pretty sure it's not the airflow in the case, and I looked over the instuctions on the zalman installation. The only thing that I would change if I were to install it again would be to rotate the plastic mount (the mount has a little notch that can line up so that the processor lever thing doesn't bump it while you try to install a processor) but that seems to be a convenience feature, not a cooling one.

I also tried overclocking it to 3.4 and the heat only went up about a degree on average, maybe not even that (right now it is at 53)
 
Well put it this way, mine is at 3.4GHz and is idling at 38-40c.

So either you have something not quit right install wise or you got a hot one.
 
LPS is right. My 805D OC'd to 3.68 GHz has CPU idle temp of 32C and max load temp of 59C.

Did you perhaps reinstall the hsf without using fresh thermal compoung? What's your system temp at?
 
Hello,
I am planning on building a PC as described in this article, but I am unsure about a few things. The processor is 64 bit, correct? Does that mean I need a different version of Windows XP to run on the 64 bit processor? I have Windows XP Home right now....

Thanks for your help. Sorry if this is a repost.

-Matt
 
I guess I got "a hot one" because I just reinstalled the fan with new thermal grease and its idle temperature is 57C at 2.66GHz. Awesome.
 
This is pretty upsetting. Everything is installed lovely with good airflow and all that, but there seems to be absolutely no heat coming off from the Zalman fan. The copper coils are warm/hot, but it seems like the heat doesn't get into the fan region with the copper sheets, or at least not fast enough to effectively cool my CPU.

How hot are the copper sheets on yours (anyone's)? If you put your hand behind the fan does it feel like it's blowing warm air?
 
Do you still have the stock HSF?

try using a different monitor like speedfan or something to check the temps. It may just be an error in the reading given by the motherboard
 
We're flying pretty blind out here in netland, because we don't know anything about your system.
What brand/model MB? What brand/model case? Any case fans or other extra cooling? What model Zalman? Where are you getting the temp numbers - from BIOS, Windows, a utility program, an add-on probe? What other temp info do you have (e.g. "system" temp, perhaps "pwm" temp, etc)?
Thanks!
 
I've got: LIAN LI PC-7B plus II Black Aluminum ATX Mid Tower Computer Case (stock fans, no additions), ASUS P5WD2-E Premium Socket T (LGA 775) Intel 975X ATX Intel Motherboard, and ZALMAN CNPS9500 LED 92mm 2 Ball Blue LED Light Cooling Fan with Heatsink. I'm reading the temperature of the CPU from two programs included with my motherboard; they are: AIBooster v2.01.04 and PC Probe II, as well as the BIOS. They all show the same/similar temperatures (around 57C while doing nothing, mid 60's when doing anything processor intensive. I haven't used any sort of program to max out my processor because I think it would destroy it.) The Chassis temperature is quite cool, around 25C (according to the same programs/BIOS).

edit: Also, right now it is being overclocked using the AIBooster program to 3.4GHz. The overclock has very little effect on the temperature, maybe about 1 degree increase from 2.66 to 3.4.
 
I've got: LIAN LI PC-7B plus II Black Aluminum ATX Mid Tower Computer Case (stock fans, no additions), ASUS P5WD2-E Premium Socket T (LGA 775) Intel 975X ATX Intel Motherboard, and ZALMAN CNPS9500 LED 92mm 2 Ball Blue LED Light Cooling Fan with Heatsink. I'm reading the temperature of the CPU from two programs included with my motherboard; they are: AIBooster v2.01.04 and PC Probe II, as well as the BIOS. They all show the same/similar temperatures (around 57C while doing nothing, mid 60's when doing anything processor intensive. I haven't used any sort of program to max out my processor because I think it would destroy it.) The Chassis temperature is quite cool, around 25C (according to the same programs/BIOS).

edit: Also, right now it is being overclocked using the AIBooster program to 3.4GHz. The overclock has very little effect on the temperature, maybe about 1 degree increase from 2.66 to 3.4.
Click to expand...

well you won't destroy it, the proccesser throttles back if it gets too hot, also get some sort of temp reader, like a lazer ready and see what ti tells you.
 
I'm pretty stumped. Did you by any chance boost the CPU voltage? Also, did you clean off the old thermal goop whenever you reseated the hsf, and stick with the recommendation of a grain-of-rice sized dab of new thermal goop? Too much thermal goop will impede the heat transfer from CPU to hsf, since its thermal conductivity is very low compared to metal (although higher than air).
 
I didn't increase the voltage, right now it is at 1.38v overclocked to 3.4GHz. As for the thermal grease, with each installation I cleaned both the fan and CPU then added a lesser amount of grease (though it wasn't too much to start with, I just wanted to try different things).

How might I go about taking a different temperature reading? I'm assuming that the BIOS and the software programs all are reading the same thermometer.
 
... with each installation I cleaned both the fan and CPU then added a lesser amount of grease (though it wasn't too much to start with, ...
Click to expand...
Was it more than a grain of rice? Here's Arctic Silver's installation instructions, worth a look just to make sure you didn't miss something minor: http://www.arcticsilver.com/arctic_silver_instructions.htm
If you are using generic white grease, then I'd spend the $6 and get a small syringe of Arctic Silver 5 - http://www.newegg.com/Product/Product.asp?Item=N82E16835100007
 
the first installation may have been a bit more than a grain of rice, but not by much. I noticed in those instructions that they don't spread the grease before they mount the fan, but that's the only real difference.

One thing that's a little weird is that my CPU temperature is instantly around 55 degrees when I turn on my computer. Shouldn't it take a moment for it to reach that temperature?
 
I've got the same problem... I boot up to 50C on an ASUS PB5 Board... but I've also heard that the monitor software that comes with the ASUS is off.

Also, does anyone know all the software that toms hardware guide uses to grab info regarding the CPU, etc.

for example on this page

Toms hardware page 6

where it lists the cpu properties... etc.

and whatever heat sensor software u can recommend
 
I wonder if Intel has changed the chips they are selling as the 805D. Have you checked the product code on your CPU box to see if it matches the one in the Tom's guide article? Also, have you checked the minimum voltage for the CPU from its internal register as they did in the article?
 
I actually put some more thermal paste on than i had b4 and my system now idles at 40C - a 10C drop.

Originally, I followed instructions where they said to spread the paste onto the heatsink then wipe it off with a coffee filter. And then to put paste onto the cpu and spread it thinly with a credit card.

On reapplying the paste, I spread it on the heatsink but did not wipe it off with the filter and i applied a grain size drop on the cpu and just sat the heatsink on top of that to spread it. This gave me the 10C drop.

Now for anyone else, Im trying to figure the best way to overclock on the p5b motherboard. I tried changing the fsb from 133 to 150 but when it tries to load windows it just reboots by itself.
 
Yeah, I understand that... but the 805d is supposed to be easily overclocked... my cpu voltage is 1.25 at the beginning so it should easily be able to make that jump from 133 to 150.

I can get it to go from 133 to 140. But after that, when the system boots, I just have power and a blank screen. I was told that the CPU wasn't responding by ASUS. By I find that a little hard to believe, given that my CPUs spec is under that of what was in the guide.

Could it possibly be a RAM issue? The ram can't handle the jump?

Running

ASUS P5b Deluxe WiFi
2GB (2x1GB) OCZ28002048ELDCGE-K DDR2 800 (PC2 6400)

THanks
 
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