The most important component of a computer is the motherboard because she will be the support for all the components. A flexible solution for the Intel users is ASUS Striker Extreme 775 that provide a wide range of processor support and tons of features and gadgets for overclockers.
This motherboard is compatible with all Intel Socket 755 CPUs (FSB1333/1066/800/533MHz) except Quad Core. The board can operate at FSB 1333 only in overclock mode and in this conditions the PCIE will be also overcoclocked at 115MHz
The motherboard is based on P35 chipset known and Bearlake. The P35 Express features native support for 1333MHz front-side bus speeds, and it's compatible with future processors built using 45nm process technology. This it’s also the first core logic chipset that offer support for DDR3 memory.
The main change is the rear panel, like ASUS, MSI's ATX I/O is forward-looking, there are still two legacy PS/2 ports, but no serial or parallel ports also due P35 chipset limitations this motherboard don’t support Win98/ME.
K9N SLI Platinum is a affordable MSI solution that offers support for AM2 processors. As you see from the specifications it supports a wide range of them. This MB is based on the NVIDIA 570 SLI chipset that is very similar with the NVIDIA 590 SLI the main difference is that 590 SLI is split in two parts between north and south bridge components