There is a probable reason why the 465 is a 465 and not a 470. Try
running Furmark 'Extreme Burning Mode" on a 465 BIOS-flashed to 470.

Sure. As I said before, this particular model 465 is functionally
identical to a 470, and overclocks beyond 470 specs, maxing out at 80C in
MSI's Kombuster (a furmark clone), and in OCCT gpu tests with no errors.
Why would MSI sell a 465 with the extra ram of a 470, and a fancy heatsink,
that is the question to ask. It's a very odd product.

rms