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AMD Launches New Processor Socket Despite Poor Economy
arcticstoat writes to tell us that despite a poor economic climate, AMD is moving forward with a new processor socket launch, although they are trying to make it as upgrade-friendly as possible. "As you probably already know from the AM3 motherboards that have already been announced, AM3 is AMD's first foray into DDR3 memory support. As Phenom CPUs have integrated memory controllers, it's more accurate to say that it's the new range of Phenom II CPUs (see below) that are DDR3-compatible. However, the new DDR3-compatible Phenom II range is also compatible with DDR2 memory. As the new CPUs and the new AM3 socket are pin-compatible with the current AM2+ socket, you can put a new AM3-compatible CPU into an existing AM2+ motherboard. This means that you can upgrade your CPU now without needing to change your motherboard or buy pricey new DDR3 memory."
Or a lot of small-budget husbands :P
This is the sort of thing that gets us out of a poor economy.
The 3-fold clocking scheme will only really help on interleaved burst reads. The memory cells don't charge the output buffers any faster just because you clock them at a higher rate. This is why the nCLK latencies scale with the number of folds in DDR scheme. The only things that will make the cells charge faster are a) higher voltage or b) smaller process or c) a more conductive semiconductor chemistry that lowers resistances and increases currents on the wafer.
If you can have 3 banks of DDR3 interleaved by 1 clock then you can probably see some significant gains on sequential (aka burst) reads. In real life, this doesn't happen very much, especially in a multithreaded environment where almost all s/w is written using high-level foundation classes with very little machine optimization.