Difference between sandy bridge and ivy bridge processors

I think You know at least little about Sandy Bridge processor, but not Ivy Bridge.
Let me explain about the difference between this two kind of processors.
This is the simple graphical view of both processors..

So let we talk about it in point form...

• Sandy Bridge was introduced at the start of 2011, and Ivy Bridge was introduced in April of 2012, The newer technologies and benefits of Ivy Bridge having replaced Sandy Bridge's errors..
• Ivy Bridge uses some newer technologies than Sandy Bridge. Ivy  has a new kind of three-dimensional "Tri-Gate" transistors,PCI Express (PCIe) 3.0 and DDR3L (low-voltage) memory, buffed-up security features, and better integrated graphics.
• Ivy bridge is faster but smaller,
• Ivy Bridge has better graphics... Sandy Bridge processors sported a redesigned video system (available in two flavors: Intel HD Graphics 2000 or 3000, with the latter being more powerful)
• Iuy bridge has the same design as Sandy bridge but It used built-in USB 3.0

Those are the biggest difference between both kind of processors...

Wait for 2013 when Intel is introducing Haswell, a brand new architecture.