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cold bug mod all cards (in progress)

post #1 of 5
Thread Starter 
Rsnubje from kingpincooling.com told me about this little trick http://kingpincooling.com/forum/show...4510#post14510 .

Im gunna give it a go on my 9800gtx its a good canidate because right now it shuts off at -50 degrees so there is plenty of room to test. Wanted to document it here if it works will be good mod to have around if not then just another dead thread. Gunna clean card today and maybe solder too hopefully time to freeze again later in the week. Any suggestions then feel free So far I have only froze 2 cards but have found both of their cold bugs on dry ice. I would like to get them even colder in order to do so must find a way to lower shut off temp.

So far bugs found in MY cards are
evga 9800gtx -50
evga gtx280 -60

temps reported from base of pot not from chip but should be pretty close .
Edited by reggiesanchez - 4/4/11 at 12:31pm
    
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post #2 of 5
Thread Starter 
Poking around card and cant find a 3.3v input anywhere. Everywhere I check that is close has 115 ohms resistance. I guess ill just try and feed the bottom of the mobo and see if that helps.
    
CPUMotherboardGraphicsRAM
1100T ga-990fx-ud3 gtx 4602win corsair dominator 
Hard DriveOptical DriveOSMonitor
OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
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DUMB ocz 1000w pretty ugly logitech wireless 
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carpet gtx285 classified for physix Nvidia 3d vison  
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CPUMotherboardGraphicsRAM
1100T ga-990fx-ud3 gtx 4602win corsair dominator 
Hard DriveOptical DriveOSMonitor
OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
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DUMB ocz 1000w pretty ugly logitech wireless 
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post #3 of 5
3.3v input would come from the pci-e slots.. so locate the pin on the pci-e slot that reads +3.3v when powered up, and trace it to the "finger" on the PCI-E lanes of the GPU.

Then 'tone' for continuity from the +3.3v finger around on the PCB. Usually there are a few SMD type caps at the PCI-E slot area on the PCB that will be used for +3.3v...if you bridge a lead from 1x of these to the "vr_enable" on the control IC, you will have completed the mod.
post #4 of 5
I made a 3.3v lead on my PCIe connector from my PSU.
    
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post #5 of 5
Thread Starter 
thanks didnt know anything of vr enable.
    
CPUMotherboardGraphicsRAM
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OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
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DUMB ocz 1000w pretty ugly logitech wireless 
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carpet gtx285 classified for physix Nvidia 3d vison  
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CPUMotherboardGraphicsRAM
1100T ga-990fx-ud3 gtx 4602win corsair dominator 
Hard DriveOptical DriveOSMonitor
OLD none windows 7 x64 Ultimate 3d projector with 98in screen MOFO 
KeyboardPowerCaseMouse
DUMB ocz 1000w pretty ugly logitech wireless 
Mouse PadOtherOther
carpet gtx285 classified for physix Nvidia 3d vison  
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