Pentium 4 D 820 2.8ghz Help please

[zildjianstriker]

Hi guys,

I just upgraded from Pentium 3.2ghz 670 to a Pentium 2.8ghz d820 expecting higher performances i decided to run sisoft and my chip is running at 50 percent of normal and i have even overclocked it! check this out my attachment

Help appreciated i have no idea what to do to fix it!

[Jimmy 2004]

Other parts of your system can have an effect on your score if therer are other bottlenecks... also make sure you didn't have any software running in the background. Does seem like a low score still.

[DanTheBanjoman]

Seems Sandra does understand dual core, and all used instructions and such seem fine. It runs 2 threads like it should.

Does the Pentium D have some kind of power saving mode? IE run underclocked on low load? Perhaps it's running in power safe mode.

[DanTheBanjoman]

Btw compared to the screen I made a while ago here (http://forums.techpowerup.com/attachment.php?attachmentid=417&d=1119444750) I'm still not impressed by dual-core performance, specially considering my CPU's are like 4 years old.

[giorgos th.]

8492 + 8492 = 16984.....:cool:
higher than the default 15056...:ohwell:

[zildjianstriker]

I had to change motherbaord the 2.8 820 is unsupported by like 50 percent of hi end motherboards. Its very stupid but i fianlly got the right motherboard now it runs in dual core not single and i score 16000 unclocked 20000 when overclocked to 3.4 :)

Very impressive

[SMJ-G]

Just one thing in your original thread the 3.2GHz that you replaced is not a 670 its a 640......the 670 is a INTEL PENTIUM 4-670 3.8 Ghz.

[zildjianstriker]

thanks for pointing that out, anyway 820d all the way just need a cooler now this beast heats up to 60 degrees then shuts down.... pfft lame -.- need cooler ergently.
Pentium chips lose performance after 50 degrees i notice games start to jitter its very annoying im hoping for a big typhoon to cool my chip to 40 degrees

Wish me luck

[giorgos th.]

your cpu loses performance because maybe cpu throttling is enabled somewhere after 50c in your bios.

[Rotorbl4de]

You may need to check your temperature shutdown temps in your bios if its shutting off at 60 degrees celsius, "the Intel D820 is made to run between 50 degrees celsius and 80" quoted from intel. My D820 runs fine at 66 degrees under full load on both CPU cores and that is after making some minor modifications to my case and getting a better CPU fan. I am loving my D820 it is a number cruncher that is for sure.

I have seen a lot of people liking the giant zalman cooling heatsink and fans. I am using a Coolermaster Hyper48 heatsink with a Vantec Tornado 80(up to 84CFM) MM fan with a variable controller on the front of my case. This Vantec fan from the stock one that came with the Hyper48 dropped my cpu temp more than 10 degrees C. With the Vanctec set on a low rpm it is at a very normal noise level and it keeps my cpu at around 66degrees celsius running the Prime 95 torture test on both cores. Another thing to note is that I have a plastic tube about 4-5 inches long and a diameter of 4 inches going from the side vent on my case to right above the CPU. Intel has a diagram on their website showing the proper usage of airflow for this CPU. I like the processor a lot now after I got over the hurdles.

The real way to test the stability of your CPU at its stock speed is to make sure your machine can run the Prime95 program for a minimum of 12 hours. You will have to have two seperate copies of Prime95 open at the same time after which you can tell each instance to run on a each of the cores. The torture test is what you want to run and if your temp is climbing over 75 degrees within the first few minutes then you know you have a problem with cooling. A lot of people will say that if your system can run Prime 95 the torture test for 24 hours without errors that your CPU is stable. After I added the Vantec Tornado 80mm fan and the proper venting I was able to run Prime95 on both of my cores at around 66 Degrees Celsius on a low RPM setting. I could push the temp down more if i wanted to listen the whining of the fan, and it is tolerable if you like the sound of a server.

In the future I will try a few different cooling solutions like the Zalman and then eventually water cooling to see if i can eliminate noise.

The Vantec Tornado with a variable controller was a cheap solution for cooling my system after i had already bought a heatsink and fan combo and wasn't able to return it.

I had a lot of fun building my system and suping it up to run better under a full load.

You can read more about my experience and other questions i have at the following link with the Intel D820 and heating issues.
http://forums.techpowerup.com/showthread.php?p=67210#post67210

[SMJ-G]

I agree with your initial comments on the Asus P5N32-Deluxe SLI and there are some other LGA775 and specially SLI & CrossFire mobo’s that are the same, still in the beta stage and shouldn't be on the shelf for people to buy. All that Asus and other manufacturers are doing is using us as there guineapigs.

For instance the mobo that I am using now the Asus 5PLD2-Deluxe that has taken 5 months for Asus to get right and to run reliably, this is with black screens, bios crashes and reliability problems right through, this is my third mobo and all up I don’t think I have used it for more than two months and also I just got it back from Asus service after three weeks, they repaired it and updated it to the latest bios 0506 01/16/06. So let’s see how it will work? All is well so far……keep my fingers crossed……but one thing I must say now is that the mobo feels faster and does everything that it should off done when I first took it out of the box.

What I am trying to say is that AMD and Intel are just not doing the R&D on all these new technologies and are releasing substandard products just for the sake of calling it new!!!

[Rotorbl4de]

I just wanted to add that I think that there is not much reason to go dual core or with the 64bit technology unless you are a business user and or you just want to spend the money. I found out the hard way.

I would have been just as well off having built a new system around my the processor out of my el-cheapo Dell Dimension 4700 that I bought a year ago for 430$ versus buying my D820 Intel cpu and building the new computer around that.

The processor in the Dell is a 3.2Ghz, 1mb cache, 800fsb, LGA775, 540 series Intel CPU 32bit and it is actually faster than my D820 processor for gaming and that is using the 6600GT as the test video card.

I would advise anyone building a new system to steer clear of the smithfield and pressler cores and wait or build an AMD system if you are going to game.


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Intel D955XBK, Intel D820, 1GB, X1900XTX Sapphire
3DMark05 9564

[Azn Tr14dZ]

btw, ur Pentium D might Shut down at 60 degrees because it only lists the temp of 1st core only, not 2nd. same happend here, my pentium d shut down at 70 when oc'd to 3.5ghz but the 2nd core was at probably over 120 degrees.

[spy2520]

that could make some sense out of why my mobo reports cpu temps of between 20-30* C at idle. i know its wrong, more like half of what the temperature should be.