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Reload this Page Voltmod HD3870 Sapphire ON Fire

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Old 03-14-09   #1 (permalink)
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Default Voltmod HD3870 Sapphire ON Fire
I Have done A Hard Vmod With POTS
To Have more voltage
My3870 :


My Vmod:




I did want make My Vmod Easy So I Came With The USBVmod
The pots Are here:




And I hope it's not The misstake That Left my Pc Dead
So When I connect The Usb The gpu Vcore Become 1.41 and The Vram 2.13
The Vmod Works But my Pc died When I went Far With Both Vram & Vcore
To 1.7v And 2.30V


Thas the Point Of Fire !!!!
I See Fire Under The Gpu HeatSkin
I don't know What to do I Have Change The HD 3870 It"s Not The Same any more and No More Warranty :


However I did find An Something :
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Old 03-14-09   #2 (permalink)
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So Should i do!!.???
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Old 03-14-09   #3 (permalink)
green apples....**** yeah
 
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lol?
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Old 03-14-09   #4 (permalink)
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Very careless mistake.

Take a look at the PCI-E power connector you soldered the POT to.

You soldered to two pads right? You soldered one to ground (the pad from the side of 3 that is closest to the GPU core), however the other one from the other row connects to the live PCI-E pad.

You should have soldered in the row closest to the GPU core, as it relates to the black wire on the connector, and on the wire. The other color is positive, in this case 12 volts I believe.

Very surprised your card lasted as long as it did.

Also Air cooling is not nearly enough for that much voltage, water cooling, or at least a decent air cooler is required.

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Old 03-14-09   #5 (permalink)
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the heat blew the wires lol. I guess you can try to clean it off, get a reference cooler and try to RMA it?
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Old 03-14-09   #6 (permalink)
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No The Vmod Works at 1.56V
But 1.7 V ?,
i Don't Know The Pc Don't Work Even Without 3870??
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Old 03-14-09   #7 (permalink)
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I'm using 550W PS
And The ps Did not works With out the MotherB
I did connect The PS-on ('green) With PG(grey)
PSFans did Not Work???
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Q6600		 Motherboard
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Old 03-14-09   #8 (permalink)
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I'm gonna go ahead and deem this fail.
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Old 03-14-09   #9 (permalink)
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Quote:
Originally Posted by trueg50 View Post
Very careless mistake.

Take a look at the PCI-E power connector you soldered the POT to.

You soldered to two pads right? You soldered one to ground (the pad from the side of 3 that is closest to the GPU core), however the other one from the other row connects to the live PCI-E pad.

You should have soldered in the row closest to the GPU core, as it relates to the black wire on the connector, and on the wire. The other color is positive, in this case 12 volts I believe.

Very surprised your card lasted as long as it did.

Also Air cooling is not nearly enough for that much voltage, water cooling, or at least a decent air cooler is required.
No I'm using Thin wire Used on fans !!!!
And The vmod works Fine I can add Vcore and Vram
But 1.7V !!!!
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Poor People Need Overclocking.

Core 2 Duo Cooler in HD3870Sapphire

System: Stupid PC
CPU
Q6600		 Motherboard
FOXCONN 975X ahhhhhhhhhhh		 Memory
4gb Crosshair 800Mhz 		Graphics Card
HD3870 Sapphire
Hard Drive
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600W
CPU cooling
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Old 03-14-09   #10 (permalink)
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No, he's saying that you attached one of the wires to the wrong point of the PCIe power connector. You're only supposed to connect the wires to the ground! What you did it connect it to straight 12V! Like he said, I'm surprised that it lasted that long!
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