ASROCK 939Dual-SATA2 and SI-120

Discussion in 'ASRock' started by Arno Wagner, Jan 6, 2006.

  1. Arno Wagner

    Arno Wagner Guest

    Just to document this:

    The ASROCK 939Dual-SATA2 mainboard and the Thermalright SI-120 are
    compatible, but just barely. The problem is that the mainboard
    does have the right holes, but the original retention module is
    not screwed in with a backplate, but mounted with 4 holes and
    platic pins. The SI-120 expects to be screwed into a metal backplate
    with two screws.

    If you want to mount this cooler on this mainboard you either have to
    find a K8 metal backplate somewhere or to make one yourself. Screwing
    the retention module directly to the mainboard is possible with large
    enough washers, but not advisable at all. It seems some Gigabyte
    mainboards also need a back plate, I have orderd one and
    will post here whether it fits.

    Arno Wagner, Jan 6, 2006
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  2. Arno Wagner

    stanmc Guest

    Built this same combination a few months ago. Ordered the backplate that
    works with the XP-120 from the dealer and it install perfectly. The
    Instructions for the SI-120 said I had to use nail polish remover to
    loosen the original retention module from the motherboard, but in the
    case of the AsRock939 that is not needed. I just unscrewed it, put the
    Thermalright supplied RM in place and screwed it to the metal backplate.
    Worked perfectly.

    AsRock939 Dual Sata2 with Athlon64X2-3800+ 1GB ram and using Fedora Core
    4 in SMP.
    stanmc, Jan 6, 2006
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  3. Arno Wagner

    Kai Schaetzl Guest

    It seems I just hit the same problem. I want to mount a Thermaltake Big
    Typhoon on this Asrock board and was wondering how to remove the retention
    module (which I did and then reapplied it) and where this dreaded back
    plate is supposed to be. If I remove the plastic retention module there's
    "nothing" left. However, there's a second "H Clip" (plus a sponge and
    mylar layer to keep it away from the board) supplied for all non-K8
    installations which obviously fits this purpose. It seems I can just use
    this. But I'm wondering about the requirement of removing the retention
    module. I haven't seen any other retention module yet, but from the
    installation instructions it seems that the module is screwed to the board
    exactly thru the "middle" holes which should be used for mounting the Big
    Typhoon (or SI-120). So, it's obvious you have to remove the module before
    mounting the cooler. But the Asrock module doesn't have any screws there
    because of the four plastic clip mounting. So, I'm wondering if I can
    actually keep the module in place and still install the cooler thru it.
    If I put the CPU in place, stack the cooler on it and the other H-Clip on
    top of that there is still a four millimeter gap between the H-Clip and
    the retention module surface. I can just push the two long screws thru the
    retention module holes and the two H-clips and screw them tight with no
    problem and the retention module still in place it seems!
    The only problem I see is that four millimeter gap. I'd prefer there to be
    no gap at all. If there is a gap there is a chance that I screw one side
    tighter than the other, so that the clip will place more pressure to one
    edge of the CPU than to the other. Do you anticipate the same problem?
    From the installation instructions it looks like I should be using one or
    two of the standoffs to bridge this gap. Though it looks like the standoff
    won't be able to fully bridge the big gap between the board and the
    H-clip. Actually, that gap would remain much wider than it is with the
    retention module still in place. Or did i get something wrong here?
    It seems to me that keeping the retention module in place is preferrable
    to removing it. What do you both think?
    Question to stanmc: What retention module did Thermaltake supply? There's
    none with the typhoon coming (but four standoffs) How did you solve the
    problem of differently tight screwing?

    Kai Schaetzl, Jan 10, 2006
  4. Arno Wagner

    stanmc Guest

    Kai, I bought a Thermalright not a Thermaltake heatsink. It came with an
    RM, but not a backplate. Thermalright offers a backplate for K8
    installations. It is metal with an insulating layer. After you pull the
    pins on the AsRock RM you attach the Thermalright backplate and then
    place the Thermalright RM in place on the other side of the board and
    use the supplied screws to attach it. The SI-120 clips/snaps into the
    Thermalright RM.

    As for the Big Typhoon I see several clips which I suppose go on both
    sides of the board. I don't know how the clips are intended to be
    attached and can't find an install guide on the Thermaltake site. I did
    find this review of the Big Typhoon with some mention of the
    installation of the unit. I think they do intend for you to place one of
    the K8 clips on the bottom and one over the heatsink and screw them

    The installation comments begin on page 2. Best wishes.
    stanmc, Jan 10, 2006
  5. Arno Wagner

    Arno Wagner Guest

    I got my backplate today and can confirm this. It seems the backplate
    is standardised by AMD in the CPU cooling guidelines, so any generic
    k8 backplate should work. The holes are standardised as well, ASROK
    just added four more for their own retention module.
    Ha! I was to cheap for that. No SMP here. But I was sorely tempted.

    Arno Wagner, Jan 11, 2006
  6. Arno Wagner

    Kai Schaetzl Guest

    Stanmc schrieb am Tue, 10 Jan 2006 23:11:49 GMT:
    Uuh, ooh, yeah, confusion. I indeed confused the two. Actually, when I
    bought all the pieces for the new PC the last choice was between these two
    products and I thought they were from the same manufacturer. Now I know why
    I couldn't find the SI-120 in the products list at anymore

    It came with an
    And Thermaltake just does it the opposite way.
    Yeah, one of the clips is like a backplate. But I found this somewhat
    "scary", tiny bolts and nothing to stabilize them with the exception of the
    screw on the other end. After all, the Big typhoon ways about 830 grams.
    Instead of removing the retention module I kept it now, but temporarily
    removed it to drill the middle holes slightly bigger, so that I can stick
    M4 (4 mm) bolts thru them (Thermaltake supplies thin M3 ones). I also
    bought wing nuts (not sure if that is the correct english term) for easy
    tightening. I stuck the bolts thru the module and fastened them with a
    normal nut to the module. Then I added a plastic washer, the top clip and
    finally the wing nut on top of that. It's now a very very stable
    construction, not only hold by the two screws but also by the four pins of
    the retention module.
    Temperature (A64 3700+) is now at 27 C measured with Speedfan and 33 C
    shown in the BIOS when idle. Much less than on the site you mentioned.
    Didn't test on load yet.

    Kai Schaetzl, Jan 13, 2006
  7. Arno Wagner

    stanmc Guest

    Way to go. Sounds like you made a very stable installation. Like the
    wing nut idea. Easy to tighten and easy to remove if necessary. Best
    wishes on your installation.
    stanmc, Jan 14, 2006
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