sorry to burst your bubble
some AMD chips can be unlocked to quads (still seems to be happening if im right)
some older ATI cards were unlockable via bios
but since the 4000 series how many chips based on the same core have allowed for an unlockable upgrade via bios? the last i recalled were a few 4830s that could be upgraded to 4850s, not all, and its a risk, and that was like 2 years ago.
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