With the release of Sandy Bridge LGA 1155 processors overclocking enthusiasts got a big hit because BCLK frequency overclocking was severely limited in it. Intel came up with unlocked multiplier ‘K’ series processor to come over this hitch. With these processors, overclocking was possible by adjusting CPU multiplier.
According to some latest reports, this isnt the case with the upcoming Sandy Bridge-E LGA 2011 processors. Along with BCLK frequency and CPU multiplier a new feature called Reference Clock Ratio (RCR) is introduced. This is a new type of multiplier which effects CPU and memory frequency without making any effect on SATA and USB buses like it used to happen. This will help enthusiasts overclock the CPU without facing any instability issues with other parts of the system. Three RCR ratios that will be, possibly, featured in Sandy Bridge-E are 1.00x, 1.25x and 1.66x. Overclockers will have to go through quite a process to determine the settings they require for certain overclocks. For instance, targeted processor frequencies will have to be divided by RCR ratio to determine the final BCLK frequency and CPU multiplier.
As its pretty evident that this new feature will be a bit complicated as compared to what it used to be with previous generation Intel processors but it’ll surely help overclocking enthusiasts in many other ways.