I was browsing the new Core i7 motherboards at Scan.co.uk when I came across the Asus Rampage II Extreme (click here). The compatible memory specification is listed as DDR3 1066, DDR3 1333, DDR3 1600(OC) and DDR3 1800(OC).
I would like to know why the last two memory types have what appears to be overclocking notifications. I have seen this on a few new motherboards but I don't know what it means. If I was crazy enough to buy this motherboard (which I am), would DDR3 1800 memory work as standard or is extra configuration required?
Memory is backward compatible. You can buy DDR3 1600/1800 MHz. RAM and it will work in the MB. But, you would have to set the speed to it's 'rated' or guaranteed speed from the Mfg. The MB BIOS will default the speed to JEDEC standards (less than 1600/1800 MHz.) If you buy memory rated at 1800MHz., you would have to manually set it to that speed. But, the 1800MHz. memory is compatible with the MB because 'memory is backwards compatible'.