Page 1 of 3 123 LastLast
Results 1 to 15 of 38
  1. #1
    3 Star Lounger
    Join Date
    Dec 2001
    Location
    Atlanta, Georgia, USA
    Posts
    272
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Heatsink compound (thermal grease)

    Hi all,

    I have a P4 3.0E GHz Preston or Prescott, I can't remember which name they used, CPU that is running hot (I know they do this by default, it's just how they work). Anyway, I have a heatsink/fan rated for a 3.2GHz processor and some generic heatsink compound in use. I'm wondering if changing out the heatsink compound could dramatically drop the temps I'm seeing. Right now when I boot up the computer and do nothing with it I see the temp running around 40 degrees celsius, and it often goes into the mid fifties when I'm doing anything intensive (I think I saw it go up to 60 when playing America's Army as well). I have some Arctic Silver 5 on the way, but am wondering if it will make that big a dent in the temps I'm seeing. If you don't think so I might also get a new heatsink/fan to go with the new compound and install them both at once to see if I can get the temp to drop about 10 degrees. Let me know what you think.

  2. #2
    4 Star Lounger
    Join Date
    Feb 2006
    Location
    Cape Cod, Massachusetts, USA
    Posts
    408
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    I believe that the max case surface temp spec is in the mid to upper 60s, so you are at or near the recommended limit. If you current heatsink compound is not dried out and is covering the entire chip area, then changing the compound will not have a "dramatic" effect. Not a bad thing to check and change, however. Make sure that fan (and any other fan in the system) is working properly, that wiring is not blocking the air flow, that the inside of the computer is clean. Chances are that you are seeing typical warm performance of this processor. A new heatsink and fan may help if the new combo has specifications better than the one you are currently using.

    Paul

  3. #3
    Uranium Lounger viking33's Avatar
    Join Date
    Jun 2002
    Location
    Cape Cod, Massachusetts, USA
    Posts
    6,308
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Heatsink compound (thermal grease)

    I agree with Paul on this.
    I wouldn't expect any eye opening changes in temp with Arctic Silver. ( which I think is over hyped ) Any properly applied thermal grease will do a decent job of heat transfer. That along with a properly sized fan for the type of CPU and unobstructed air flow within the case should keep the temps within specs. A decent EXHAUST fan is also a plus.

    With all these things in place, if temps still rise erratically and close to the danger point, I would suspect a CPU that is having it's own internal problems.
    BOB
    http://lounge.windowssecrets.com/S/flags/USA.gif http://lounge.windowssecrets.com/S/f...sachusetts.gif


    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  4. #4
    Super Moderator
    Join Date
    Dec 2000
    Location
    Renton, Washington, USA
    Posts
    12,560
    Thanks
    0
    Thanked 4 Times in 4 Posts

    Re: Heatsink compound (thermal grease)

    "CPU that is having it's own internal problems" or one that has been OVERCLOCKED.

    Now running HP Pavilion a6528p, with Win7 64 Bit OS.

  5. #5
    Uranium Lounger viking33's Avatar
    Join Date
    Jun 2002
    Location
    Cape Cod, Massachusetts, USA
    Posts
    6,308
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Heatsink compound (thermal grease)

    TRUE !
    <img src=/S/yep.gif border=0 alt=yep width=15 height=15>
    BOB
    http://lounge.windowssecrets.com/S/flags/USA.gif http://lounge.windowssecrets.com/S/f...sachusetts.gif


    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  6. #6
    Plutonium Lounger Leif's Avatar
    Join Date
    Dec 2000
    Location
    U.K.
    Posts
    14,010
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    I*f you want others to do some research for you, can you make your links live? <img src=/S/smile.gif border=0 alt=smile width=15 height=15>

    See the quick guide and/or <!help=19>Help 19<!/help> - it's really not that difficult and is very helpful to other loungers!

  7. #7
    Plutonium Lounger Leif's Avatar
    Join Date
    Dec 2000
    Location
    U.K.
    Posts
    14,010
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    Is it worth making any comment about the amount of heatsink compound to apply? My view is that it is there to create a path with the least thermal resistance between the device and the heatsink. It itself is not going to dissipate the heat, therefore applying too much can have the reverse effect required. I would recommend applying a thin but even layer, but no more than is necessary to ensure contact between both surfaces.

  8. #8
    3 Star Lounger
    Join Date
    Dec 2001
    Location
    Atlanta, Georgia, USA
    Posts
    272
    Thanks
    0
    Thanked 0 Times in 0 Posts

    **EDITED** Re: Heatsink compound (thermal grease)

    Sorry ladies and gents. I'm not used to using links here. It's a bit easier at other boards where the click panel buttons are already on the page you're typing into instead of having to click on the 1-Click TagPanel. I'll start using that from now on.

    No OC'ing here. Check out these fans and let me know what you think would be best:

    http://www.microcenter.com/byos/byos_singl...oduct_id=253004
    http://www.newegg.com/Product/Product.asp?...N82E16835106606
    http://www.mwave.com/mwave/viewspec.hmx?sc...mp;RSKU=BA21346

    BTW, this is the one I have now and it just doesn't seem to be cutting it:
    http://ultraproducts.com/product_details.p...mp;productID=79

  9. #9
    3 Star Lounger
    Join Date
    Dec 2001
    Location
    Atlanta, Georgia, USA
    Posts
    272
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    He Leif, last night I swapped out thermal grease and saw a slight difference between the old generic stuff and the new Arctic Silver 5. I used only the amount of Silver 5 that the manufacturer recommended, whereas with the generic stuff I used plenty. I honestly didn't know it took so little to do what it is supposed to do.

  10. #10
    Uranium Lounger
    Join Date
    Jan 2001
    Location
    Cincinnati, Ohio, USA
    Posts
    7,089
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    I've got a recommendation for you that worked wonders for me. It's called 2CoolPC, and basically all it is is a fan attached to a duct that deposits air right on top of the processor. I found it a few years back when I had a motherboard that ran hotter than average, and it dropped the CPU temp by about 15 degrees F.

    Between that and judicious use of thermal compound, I think you can achieve a stable operating temperature. Make sure that the interior of the case does not have obstructions in the airflow path (bottom front to top rear) while you're at it.
    -Mark

  11. #11
    3 Star Lounger
    Join Date
    Jun 2001
    Location
    Irvine, California, USA
    Posts
    292
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Heatsink compound (thermal grease)

    You may want to look at this one http://www.amazon.com/gp/product/product-d...2&s=electronics My neighbor just got it and says it is incredible compared to several others that he has used. Also the reviews are very favorable.

  12. #12
    Bronze Lounger
    Join Date
    Feb 2001
    Posts
    1,424
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    Since I've never gotten brave enough to build my own box, here is probably a very basic question - how is the old thermal compound taken off of the CPU without damaging it?

  13. #13
    Uranium Lounger viking33's Avatar
    Join Date
    Jun 2002
    Location
    Cape Cod, Massachusetts, USA
    Posts
    6,308
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Heatsink compound (thermal grease)

    Leif,
    Yes, it certainly IS worth commenting about the AMOUNT of thermal grease applied to the heatsink and CPU.
    When I mentioned "properly applied" in my above post, one of the qualifications of "properly" means that a thin and even layer should be applied. I have seen cases where huge globs were layered on and oozed out over the sides of the HS. Also where a barely visible layer was spread and the only way you could determine if there was ANY on it, was to rub your finger over the HS and see if your finger was sticky.

    The whole purpose of HS grease is to eliminate as much as possible ANY gap between the CPU base and the HS face, thus ensuring the maximum amount of heat transfer.

    Heat transfer is a very important part of a Mechanical Engineering course. Much time is spent on this subject. In an ElectronicsElectrical Engineering course, I feel that not ENOUGH time is spent on the subject.

    I do agree with your comment, wholeheartedly.
    BOB
    http://lounge.windowssecrets.com/S/flags/USA.gif http://lounge.windowssecrets.com/S/f...sachusetts.gif


    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  14. #14
    Uranium Lounger viking33's Avatar
    Join Date
    Jun 2002
    Location
    Cape Cod, Massachusetts, USA
    Posts
    6,308
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Heatsink compound (thermal grease)

    Skitterbug,
    Being VERY careful, you wipe the most of the grease off the heatsink and the CPU base with a clean, lint free cloth.
    Then use Isopropyl alcohol to wipe most or all of the remaining grease. Don't use something like WD40 or similar, since it leaves an oil film on the area.

    Then apply a small, even coat of new thermal grease and re-seat the CPU on the heatsink. Again, being very careful, particularly with an AMD CPU which has the reputation of being fragile. ( or at least it used to have that rep? )
    BOB
    http://lounge.windowssecrets.com/S/flags/USA.gif http://lounge.windowssecrets.com/S/f...sachusetts.gif


    Long ago, there was a time when men cursed and beat on the ground with sticks. It was called witchcraft.
    Today it is called golf!

  15. #15
    Bronze Lounger
    Join Date
    Feb 2001
    Posts
    1,424
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Heatsink compound (thermal grease)

    Another question? - So the thermal compound is actually greasy rather than turning hard after contact?

Page 1 of 3 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •