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Thread: High end GFFX heatspreader mod

  1. #1
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    Thumbs up High end GFFX heatspreader mod

    Hi this mod is for all of you with the high end fx cards say FX5800U/NU FX5900U/NU/XT and the FX5950 (Im not sure though if they have the heatsink)

    I lost 15 degrees C with the stock cooler on the card by removing the heatspreader on the core..

    BEFORE (idle) : 56 degrees celcius
    AFTER (idle) : 41 degrees celcius

    The card without the stock cooler and with the heatspreader attached:


    The "tools" needed for dismounting the heatspreader:


    By squeezing the thin edge of the blade in between the heatspreader and the gpu chip it starts to loosen and you should do this approx' to the 2 edges of the heatsink then i could just snap it of with my hands from there:


    And when you're all done and you pray that you havent ruined your card then it should look something like this


    I hope that all you fx users can use this to sqeeze the last mhz out of your cards, but im sry to say that I myself cant tell you an approx gain on the core because I havent tried overclocking this card yet, but I would really like to know how much you can manage to get and how big a temp drop you gained...
    And beware that you dont crush your core now...I almost did

    I wont take any responsability!
    Last edited by Bra!nFreeZe^; 02-09-2004 at 02:11 PM.
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  2. #2
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    bah, your pics no workie in firebird OR IE!!
    AMD Phenom II x3 720BE @ x4 | Kingwin XT-1264 Direct Contact Push/Pull Cooler | Asus M4N98TD EVO AM3 NVIDIA nForce 980a SLI | 2x2gb A-Data DDR3-1600 | 2x EVGA GTX 460 Superclock 768mb SLI | Mushkin Enhanced Callisto Deluxe 60gb Sandforce SSD | 2x WD2500KS Caviar Blue SE 16 | Antec Earthwatts EA650 Power Supply | Old 26" 720p/1080i TV | Logitech MX5500/Revolution and MS Sidewinder X5 | Altec Lansing ADA885 THX 4.1/5.1 | Windows 7 Ultimate

  3. #3
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    Hmmm my server must be down....would somebody be able to host my pics ?
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  4. #4
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    looks like the server is up again

    nice job dude

    a bit like removing the shim of a radeon

    X

  5. #5
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    only bigger and knifier

  6. #6
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    a bit like removing the shim of a radeon
    Yep but this mod is alot more efficient if you ask me

    only bigger and knifier
    Yeah its really difficult compared to the ati shim removal because you cant really see if your knife is cutting all the small smd's off :P
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  7. #7
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    Looks like i'm not alone in owning FX5800 here
    Done this mod a couple months ago (in August) and made a few beautyful pics of core in sun shining
    Attached Images Attached Images
    Last edited by prommy_fan; 02-09-2004 at 02:51 PM.

  8. #8
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    Originally posted by prommy_fan
    Looks like i'm not alone in owning FX5800 here
    Done this mod a couple months ago (in August) and made a few beautyful pics of core in sun shining

    Damn nice ! what are you clocks on the card ?
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  9. #9
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    I did it and lost about 5c full load on gpu only about 2c @ idle desktop.
    My Heat
    gd-70\955\2x1gbhz1600
    ext-58\920\3x2gb998691
    Expert\170\2x1gbhz

  10. #10
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    Did you clean the HS properly and did you apply new thermal paste ?
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  11. #11
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    Originally posted by prommy_fan
    Looks like i'm not alone in owning FX5800 here
    Done this mod a couple months ago (in August) and made a few beautyful pics of core in sun shining
    Where exactly do you live then?
    Ati shim is rather easy, I did it without damaging anything, I guess I was rather lucky
    Good job!

  12. #12
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    Originally posted by Bra!nFreeZe^
    Did you clean the HS properly and did you apply new thermal paste ?
    I applyed AS5 and used a aftermarket HSF.
    My Heat
    gd-70\955\2x1gbhz1600
    ext-58\920\3x2gb998691
    Expert\170\2x1gbhz

  13. #13
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    i recommend it to remove the heatspreader, too !

    my fx5900 got at idle about 40°C and load about 75°C (Waterchiller)

    after removing i never come above 30°C (!) und never above 40°C (!!!!!!!!!!!!!!!) in load

    (for load, i use DX9 Real-Time High-Dynamic Range Image-Based Lighting-Demo by Masaki Kawase)

    p.s. : and after removing i could oc from 490 to 525MHz

    ----- AMD K6-2 300 "Chomper" xxxxx xxxx xxxx /// 300 MHz @ 2,200 V -----
    ----- AMD Athlon XP 1700+ "Thouroghbred B" JIUHB 0306 MPMW /// 2400 MHz @ 1,900 V -----
    ----- AMD Athlon XP-M 2500+ "Barton" AQXEA 0327 UPMW /// 2450 MHz @ 1,850 V -----
    ----- AMD Athlon XP-M 2600+ "Barton" IQYHA 0401 XPMW /// 2500 MHz @ 1,750 V -----
    ----- AMD Athlon 64 3000+ "Newcastle CG" xxxxx 0418 WPMW /// 2600 MHz @ 1,600 V -----
    ----- AMD Athlon 64 3200+ "Winchester D0" xxxxx 0433 SPMW /// 2750 MHz @ 1,616 V -----

    ----- AMD Phenom II X2 555 BE "Callisto" xxxxx xxxx xxxx /// 4080MHz @ 1,375 V -----
    ----- AMD Ryzen "Zen" xxxxx xxxx xxxx /// TBA @ TBA -----

  14. #14
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    hmmm...... I'm going to do it this sunday. I'll post result. Currently I'm doing 550/950 on air.
    OC till 50

  15. #15
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    Allright well my FX5800 died but im getting a FX5900XT card tomorrow so Ill try it out on that card and Ill see where the mod gets me
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