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Old September 25, 2012, 04:38 PM
frontier204 frontier204 is offline
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Location: Ottawa, ON
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My System Specs


See how it's gathering around the warmest parts / largest contacts of the board? It's likely flux or solder mask residue from the creation and assembly of the PCB. I'd be quite doubtful that it's actually calcium, as calcium + moisture (= form of salt water) would mess up your GPU quite badly.
Cleaning Question - White residue after cleaning... - All About Circuits Forum

I doubt that affects performance of the board, and it can usually be cleaned off with alcohol (if it's flux).
EDIT: I have similar residue building around the VRMs of my Gigabyte MA770-UD3 which I'm using with an OC'd Phenom 9950 (HOT processor) and the computer is still Folding@Home stable.

As long as you don't see something like this you should be fine: Horrible pictures of dead caps
"The computer programmer says they should drive the car around the block and see if the tire fixes itself." [src]
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