High Temperature of Intel Cpu LGA775

david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hi Everybody :)

I have heard alot about your great forum and Nathan. I am so happy to be a member in the forum. I have a problem and I hope you guys can help me.
I recently got a scholarship from my university and got a new computer. I bulit it myself. My problem is high cpu temperature. I read in the forum that Nathan tested intel cpu (LGA775) and his idle temperature was 33'C and load temperature was about 47'C. My idle cpu temperature is 52'C and when i play games it hits 70'C. I am so worried. My computer specifications are as below:

Case : Thermaltake Xaser V 6000A with 5 fans (3 intake and 2 exhust - default configuration) all working at their maximum speed

PSU: Vantec 520A (520W) with 3 fans

Motherboard: INTEL D925XCV

Ram : Kingston 512 DDR2 533Mhz

CPU : INTEL 3.4 LGA775 - I use Intel fan and heatsink that come with cpu (working at its maximum speed)

VGA: Asus Extreme PCX 5900

Soundcard: Creative Audigy 2 ZS

Hard : Maxtor 80 G SATA

I even used round cables for floppy disk and cd-rom for better cooling. Please tell me what to do to reduce the cpu temperature. I considered changing case fans to VANTEC TORNADO and also changing the cpu fan and heatsink to Gigabyte Rocket 3D Cooler Pro. However, I am not expert in these stuff. I truly appreciate your help and suggestions.

Sincerely,
David Green

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Ham_fisT · Posted: Mon Oct 18, 2004 8:31 pm Post subject:

Welcome to Tweaknews

What kind of Thermal Interface Material are you using? Is it the grey goop that was on the bottom of the Intel Heatsink?

I would recommend a nice thin layer of a good quality thermal paste such as Arctic Silver

I'm not sure about aftermarket cooling solutions for this socket, as it's so new, but that crap Intel spreads on their Heatsinks is just that...CRAP!
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Yeah....... ok

zhensem · Posted: Mon Oct 18, 2004 8:37 pm Post subject:

Just make sure your heatsink and fan are seated properly! Check, check again and then check yet again!

Touch the heatsink with your hand, can you keep your hand on there for long? Is it hot, warm?
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david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hi Guys :)

I appreciate your replies and suggestions. I 'm gonna buy Arctic Silver tomorrow because my current Thermal Interface Material is the one at back of the heatsink , which i guess, isn't good. Also I checked and checked and checked (lool) to make sure fan and heatsink are properly fixed on the cpu.They're fine.

Ham_fisT · Posted: Mon Oct 18, 2004 8:57 pm Post subject:

just be sure to put a VERY thin layer of Arctic Silver on...you should almost be able to see through it.

I use a credit card type thing to spread it out perfectly even

Let us know how it all works out

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Yeah....... ok

JayDubya · Posted: Mon Oct 18, 2004 11:07 pm Post subject:

It would be a good idea to get some new thermal paste. Make sure to clean the heatsink and the processor core with isopropyl rubbing alcohol (70% or better).

Also, does your case have a fan in the top? If not, it would be a good idea (if you are brave enough) to cut a hole in the top of the case adn put one in.
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JayDubya aka JW Jay JD ^> ﺵ

2old2care · Posted: Mon Oct 18, 2004 11:34 pm Post subject:

I would think your case would be fine for cooling that processor, but....make sure all the fans are pointing the correct direction. I know this sounds to simple but...I've seen them put on backwards(from the factory) particularly side fans. In the case of a prescott they are very important.

The side fan should blow cool air on the HSF and the back and top fan must pull the heat out. Some ppl even add a duct to funnel cool air to the cpu. But getting a flat, perfect, thermal bond is very important. These guys are leading you in the right direction.
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Liquid-Cooled Q9450 and an EeePC
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david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hey Guys :)

Thanks alot for helping me. I did a little research on the net and found Arctic Silver 5 Thermal compound is the best! I will get it tomorrow. Can I clean my current thermal compound with dish detergent and a piece of cloth? (got it from arctic silver website) because I have no idea where to get that alcohol you mentioned

Also, do you guys think it is necessary to replace some of my case fans( thermaltake fans) with Vantec Tornado ones? I live in canada and each tornado fan 90mm or 80mm costs me about $ 25.
The fan configuration in my case is (all fans are thermaltake and comes with the case) :

Top Fan: 80x80x25 mm fan, 2050rpm (exhaust)
Front Fan: 80x80x25 mm fan, 2050rpm (intake)
Side Up Fan: 90x90x25mm, 1300rpm~3000rpm (intake)
Side Down Fan: 90x90x25 mm fan,1800rpm (intake)
Rear Fan: 90x90x25 mm, 1300rpm~3000rpm (exhaust)

This is the link to see the picture of my case : http://www.thermaltake.com/xaserCase/Damier/v6000a.htm

Best Regards,
David

JayDubya · Posted: Tue Oct 19, 2004 12:05 am Post subject:

You can get the rubbing alcohol from any store ( i.e. - wallgreens, walmart, or any drug store) Just ask and someone will be able to tell you where to find it.

You can clean your heatsink with dish detergent. make sure all of the sticky thermal pad or thermal compound is completely off before you put the as5 on. Remember, you only need a minimal amount of it spread very thin across the processor core.
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JayDubya aka JW Jay JD ^> ﺵ

zhensem · Posted: Tue Oct 19, 2004 12:08 am Post subject:

No, you do not need to replace your fans. Those thermaltake ones will do just fine.
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meobius · Posted: Tue Oct 19, 2004 7:42 am Post subject:

those temps apear to be normal, in fact a bit cooler then what i've been seeing.
my recommendation would be watercool it

Xal · Posted: Tue Oct 19, 2004 8:43 am Post subject:

those temps are a bit high for the lga775, the AS5 should help out quite a lot. Also check to make sure your CPU is fitted properly, no grease or anything on the contact pads at the bottom, I would recomend cleaning the contacts on the CPU carefully and make sure all the pins on the mobo are working properly (spring loaded thingys). Be very carfull while checking this as you could damage them.

Welcome to TN

_________________
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Asus M3N78-EM
4gb Corsair XMS2 DDR2 667 @ 800
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Custom case

david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hello guys :)

Gooood Morning. I just have a question. In LGA775 socket , the cpu goes in a small metallic box and you close the door of the box!!! Then the thermal compound applies to the top of the door (not directly on the cpu).Should I also clean the surface of my cpu with the alcohol? maybe oil from my hand or something else be on the surface of cpu?

Thanks Alot,
David

JayDubya · Posted: Tue Oct 19, 2004 1:31 pm Post subject:

use a very clean piece of cloth to clean the processor core. Avoid getting oils from you hand on the bottom of the heatsink or top of the processor.

i am not sure what you mean by the metallic box and door of the LGA775.
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JayDubya aka JW Jay JD ^> ﺵ

2old2care · Posted: Tue Oct 19, 2004 1:44 pm Post subject:

david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hello Guys :)

I 've bought Arctic Silver 5 and applied it to the cpu. I cleaned the previous thermal compound with isopropyl alcohol 70% very very carefully then applied the AS5 and made it even with a credit card. I fixed the heatsink and checked it a few times to make sure it 's completely fixed on the cpu. the results....uhmmm....no difference at idle temp

But at stress situation (Sandra 2004 and Intel Stress Test softwares) my cpu temp reduced to 65'C. It means 5'C reduce which is somehow great.but... I WANT lower temp

Also, I did one more thing . I 've bought a Vantec Tornado 90mm fan. Where is the best place to put the fan? at back as exhaust or at the side up, exactly in front of the cpu fan as intake? This fan is extremely powerful. My friend told me to not put it in the side up in front of the cpu fan because it squeezes the hot air, released from cpu fan and heatsink, on the heatsink.Where is the best place for this powerful fan?
I am still wondering how nathan got 32'C at idle and 47'C at stress. I appreciate your help and further sugesstions.

Thank you,
David

Ham_fisT · Posted: Tue Oct 19, 2004 4:27 pm Post subject:

Getting a 5*C drop from changing Thermal paste is Great

after doing some research, I can't find too many aftermarket heatsinks for this socket, but here is one option>>> http://www.newegg.com/app/ViewProductDesc.asp?description=35-106-044&depa=1 <<<

you could mount that Tornado on one of these, and probably drop about 15*C from the stock Intel Job.
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Yeah....... ok

JayDubya · Posted: Tue Oct 19, 2004 8:11 pm Post subject:

Give the AS5 a chance to 'burn in' or set in. There have been many times that i have noticed another 3-8C drop after a few days.
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JayDubya aka JW Jay JD ^> ﺵ

2old2care · Posted: Tue Oct 19, 2004 9:32 pm Post subject:

JayDubya · Posted: Tue Oct 19, 2004 9:46 pm Post subject:

^^Good call, Ö. Try switching the side fans around (have one blow in, one blow out, both in, both out, etc) Its all about trial and error. you may also want to make sure you have good cable management. If you don't have rounded IDE cables, it is very easy to make your own (just make sure you have a spare IDE cable in case you mess up. Let me know if you want to learn how to do this.
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JayDubya aka JW Jay JD ^> ﺵ

david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

HI Guys

You guys are great, true friends. I truly appreciate your helps and suggestions. I applied AS5 and got 5'C reduce in cpu temp. I just got Thermaltake Tower112 and with 1 Vantec Tornado 90mm fan working at its full speed and got 10'C reduce in cpu temp. Thanks alot to Ham_fisT for his great research. My idle temp is now 40'C and at its load it hits 50'C. I am so happy with that. My heatsink can take 2 fans. I just installed 1 that does intake.Do you guys suggest that I get another Tornado for exhaust? Currently I have a thermaltake fan working at 3000RPM at the back of my case as exhaust fan. Again , I really thank you guys

2old2care · Posted: Tue Oct 19, 2004 10:02 pm Post subject:

Play with things a bit. Making a loud wind tunnel out of your case may not help. You may be just as well off by switching a couple fans around or moving things around a bit to direct the air where you need it.
Sounds like your well on your way, each new degree of temperature will be harder and will require patience. But 50C is not bad at all.
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Liquid-Cooled Q9450 and an EeePC
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david_green20032004 · TweakNOOB Joined: 18 Oct 2004 Posts: 10

Hi there,

I had to remove my side top fan because thermaltake tower112 is very tall and i cant close my case door without removing the top fan. I attached the Vantec Tornado fan power cable directly to the power supply because when i attached it to the motherboard it didn't work.Is it a problem?

Do I get lower cpu. temp if I replace my exhust fan at the back of my case with a Tornado Fan?

Sincerely,
David

meobius · Posted: Wed Oct 20, 2004 11:41 am Post subject:

ideally air inflow should=air exaust. The more air flowing overall, the better.
Again, high temps are normal for socket 775. If you have an asus board, i have seen that it reduces the reported temps by 12-24 degrees (so that way the cpu failsafe doesn't kick in. I'm sure even on the intel board, if you where to record the actual core temps, it would be higher than what the bios reads it as.

meobius · Posted: Wed Oct 20, 2004 11:44 am Post subject:

anotherthing does the vantec fan you're using have a 24pin or a 20pin molex...
with your setup i'ld recommend a psu with a 24pin atx connector