In the end, we found that this memory, while suited to the enthusiast, has very little grounding within the more extreme niches. While it is capable of holding down timings of 4-4-4-12 utilizing 2V at 800MHz, there is absolutely no room above this point to continue from. Thus, in the end, it seems that we've ended up with a set of stellar PC2-5300 sticks rather than PC2-6400. To that end, these modules would compliment any system running memory at such a speed, as well as overclockers who are looking to get the most out of their older motherboards. In the end, while we admittedly can't recommend this as extreme Overclocking memory, it's still a good solid buy for those who want a fast, stable system as well as those who need incredible latencies at lower speeds. With that in mind, we're sure you won't be disappointed with Crucial's modules.