That's a debatable answer. For some things that work more on IPC and not thread count, there'll not be all that much difference, even between the 1200 and 2600. Where there will be a significant difference is in the multiple thread stuff, using 6-12 threads. That's where any backlog, prioritization or bottleneck the 1200 suffers from will be alleviated. Multitasking will be far smoother.