Moving the microarchitecture from Sandy Bridge to Ivy Bridge results in a modest performance gain in terms of IPC and the clock speed increase of about 100 MHz (or 0 MHz if you count the later released Core i7-3970X part) left us with performance gains of 3-13%. Considering that SNB-E was already considered the highest performance system you could buy (for multi-threaded content), if you can gain another 10% on that in select workloads then you have an easy win."
A quick patch update to Windows can extend the useful life of a PC. To take the fear out of Upgrading Windows 98 to Windows XP, rely on this guide. - PCSTATS Tips