Intel recently launched their new 4th Generation Intel® Core™ processors, code named Haswell, based on 22nm technology. Intel's previous generation Ivy Bridge processors allowed for speeds of 2800MHz, with Haswell they have allowed for speeds even higher. The maximum default divider supported is 2933MHz but with some manual settings speeds of 3000MHz are possible with the right memory modules, cpu and motherboard. The Haswell memory controller allows you to fill up four slots with 8GB modules in dual channel, for a total of 32GB of memory.
Of the three primary components of the enthusiast PC that can be overclocked (the CPU, the graphics card, and the system memory), the results from overclocking system memory can often be the hardest to quantify. A synthetic test like AIDA64 or SiSoft Sandra will bear out substantial differences in memory bandwidth, latency, and overall speed, but in practice things can be a bit blurrier. Understanding that balancing an overclocked enthusiast system is an exercise in isolating and moving bottlenecks, it’s easy to forget about memory as a bottleneck when many applications don’t show a performance benefit from going to faster RAM. But with modern games being increasingly demanding and modern gaming hardware getting more and more powerful, it may be time for memory to start picking up the slack.
A report recently published over at the VR-Zone discussing the new 4th generation Intel Core processors, code-named "Haswell", and their ability to go into a lower power sleep state than any previous processor has caused some concern about PSU compatability with the new processor.
When an Intel Core (i3, i5, i7) processor is idle, it goes into a sleep state that requires less power than when the CPU is active. Since the motherboard voltage regulation modules that provide power to the CPU gets their power from the power supply's +12V rail, these sleep states can dramatically reduce the load on the power supply's +12V rail.