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Thread: Galaxy 7900GS non-ref PCB vmods help needed.

  1. #1
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    Nov 2006
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    Galaxy 7900GS non-ref PCB vmods help needed.

    I have Galaxy 7900GS 256M with such PCB:





    I really need help with non-resistor VCore & VMem mods. I've heard that to set VCore to 1.52 I need to lock 21st leg of 6558 to ground, but i dont know where is 21st leg(from where to count), where to connect it better and where is the measuring voltage point?
    I'd be very grateful for any help on this, and also for VMem mod.

    Thank in advance.

  2. #2
    Xtreme Member
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    Hello I have a Zogis 7900gs, and Its exactly like that, even the same cooler, and that violet plastic that covered the heatsink. The only diference was its said Zogis.
    If someone now about the vmod, I will be really happy, thanks everyone

  3. #3

  4. #4
    Xtreme Member
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    Richmond, VA
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    Looks like is missing...
    [-AMD Opteron 165 @ 3.0Ghz-]
    [-DFI LAN Party UT uNF4 Ultra-D-]
    [-AData 4GB (4x1GB) DDR484-]
    [-eVGA Geforce 8800GTS 640MB 320-Bit-]
    [-Creative Sound Blaster X-Fi XtremeMusic-]
    [-Seagate 160GB & 250GB 16MB Cache SATA300-]
    [-OCZ GameXStream OCZ700GXSSLI-]
    [-DELL 2005FPW LCD Monitor via DVI-D- & Westinghouse 22w3 LCD Monitor via DVI-D]
    [-Windows Vista Ultimate x64-]

  5. #5
    Xtreme Cruncher
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    I have 2 7900gss I think MSI. I need to see this sometime.
    Lenovo Thinkpad X220 - Core i5 2410m, 4gb
    waiting on 28nm video cards...

  6. #6
    Xtreme Addict
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    ithaca, ny
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    Quote Originally Posted by Leon2ky
    Looks like is missing...
    yeah why no ramsinks!?
    E8400 8x500=4000 | ABIT IP35-E
    2x2GB Tracer PC2-6400 1:1 500MHz 5-5-5-15 2.0V
    Galaxy 8800GT 800/2000/1100 1.3V | 80GB X25-M G2 + 1.5TB 7200.11 | XFiXG
    Fuzion | MCW60 | DDC2+Petra | Coolrad22T+BIP1

    Merom 13x133=1733 1MB L2 0.950V

  7. #7
    Xtreme Cruncher
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    Hey, I don't have ramsinks and I don't get artifacts or anything... IF I do in the future I'll just go to osh and pick up some sheet copper, and make GHETTO SINKS!!!
    Lenovo Thinkpad X220 - Core i5 2410m, 4gb
    waiting on 28nm video cards...

  8. #8
    Registered User
    Join Date
    Jun 2006
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    5
    the link is for another pcb ...
    i also cant get good voltmod for pretty much the sam pcb as SnipER.UA's
    mine looks like this one:

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