Not with a 2160 he can't - he's at 9x already.
This is partly why the E5200's look nice - 12.5 multi means you're unlikely to hit a FSB wall before the chip runs out of steam.
i meant higher multi than what i suggested [8X]
i think you are pushing it to its limit from what jimbo is saying
perhaps trying a few values and seeing if its stable would be the best way to go