How are 4th Gen (Haswell) Intel processors different from 3rd Gen (Ivy Bridge)

Intel usually releases a new set of processors during mid of every year with a number of changes from its predecessors. This year saw the release of fourth generation of Intel Core processors, codenamed Haswell which provide a number of new features as compared to 3^rd Generation processors, codenamed Ivy Bridge.

Architecture

3^rd Gen (Ivy Bridge) processors used a 22nm process which was quite a step up from the 2^nd Gen (Sandy Bridge which used a 32nm process. On the other hand, Haswell processors use the 22nm process but a different and more powerful and power efficient microarchitecture: Silvermont.

Motherboard Socket

If you needed to upgrade your Intel 2^nd Gen system with a 3^rd Gen processor, there was no need for changing the motherboard as both CPUs share the same LGA 1155 socket. The upgrade only required a BIOS firmware flash. The case for upgrade from 3^rd Gen to 4^th is quite different as the 4^th Gen CPUs use the LGA 1150 socket, which is electrically incompatible with the previous models.

Graphics

The Haswell processors come with an upgraded Intel HD Graphics and new Iris/Iris Pro Graphics which would improve its 3D performance over that of Ivy Bridge. Though you cannot expect to play a high end graphics game with the Haswell process.

Battery Life

In terms of battery consumption, the Haswell processors are specifically designed to reduce power utilization, allowing for a longer battery time. So if you have to travel long and spend more time away from a plug and charger, it is better that you buy a machine with Haswell processors.

Price

One of the most important factors is that of price. Once the 4^th Generation Core processors are in the market, prices of 3^rd Gen Processors are bound to fall down which makes it a best buy situation for those who were planning on buying a new system but are bound by the price factor.