Both models
E5-1620 v2 and
i7-4930K are based on
Ivy Bridge architecture.
"Ivy Bridge is the last Intel microarchitecture for which there is official driver support for Windows XP . It is made under 22 nm Tri-Gate transistor (""3D"") technology and is basically a Sandy Bridge shrink. It has PCI Express 3.0 support and RdRand instruction for security tasks."
Using the multithread performance as a reference, the E5-1620 v2 gets a score of
144.6 k points while the i7-4930K gets
198.3 k points.
Summarizing, the
i7-4930K is
1.4 times faster than the
E5-1620 v2 . To get a proper comparison between both models, take a look to the data shown below.