Yep, AMD's CPUs are actually ok, but their integrated memory controller is pretty much a modified version of the controller on the A64, having seen minor alterations throughout the whole range CPU architectures since then; and is woefully poor. The high end Phenom II and Bulldozer chips would be giving Intel a very hard time with a better IMC*.

*albeit with higher TDPs

My last 3 CPUs have been Intel, and all 3 have been overclocked (e4400 to 2.8GHz, e8400 to 4GHz, and my current i5-2500k to 4.3GHz). It'd suck to see an end to overclocking since it adds so much extra life to a CPU (speed-wise only, it'll decrease the actual life-time), but this is undoubtedly why Intel are making this move: to sell moar products :/



My Pi is running a heavy overclock right now, it's done wonders for performance in Quake 3 and MC-Server. The over-current protection is rather strict though, I can't get past 970MHz without it shutting down

Do you have extra cooling on it? One of the suppliers I looked at sells a heat sink. I guess it doesn't usually need one?

I do not, according to the on-die temperature sensor the core doesnt go over 50 DegC while playing Quake3, which is well under the 85 DegC that the chip is specified to withstand. I have seen some people with ordinary RAM sinks stuck to their Pi's though, which can be picked up pretty cheaply but don't seem to be necessary in my case. Bear in mind that my overvoltage setting is on 4 out of a possible 8 (around 1.3v and 1.4v in real terms), so there are definitely cases where a Pi could run a lot hotter than mine, but I quite like keeping my warranty