Intel's 'Haswell' CPUs could be the last interchangeable desktop processor
According to rumour below, many of Intel's fifth-gen Core processors due to be released in 2014 will be soldered to motherboards - just like Atom and mobile processors are today. Since most schools typically buy low-to-mid range Celeron/Pentium/Core i3-based PCs, this means that in order to upgrade the processor you will have to buy a brand new motherboard. While not many upgrade processors in old desktop PCs, you will have to throw away a perfectly good CPU if the motherboard dies outside of its warranty period. :(
As personal computers become smaller, their flexibility is decreasing. According to a media report, starting from the Broadwell generation of processors, Intel Corp. will only offer mainstream desktop chips in BGA packaging, which will eliminate upgrade options as well as increase risks for PC makers.
According to the Japanese PC Watch web-site, Haswell microprocessors may be the last desktop chips in LGA packaging, which enables easy switching of CPUs on mainboards. Starting from the Broadwell chips, which are due in 2014, all mainstream desktop processors will be available in BGA packaging, which means that they will have to be soldered to mainboards, something that can be done in relatively sophisticated manufacturing facilities.
The BGA MCMs should provide advantages to makers of high-performance tablets, ultra-thin notebooks as well as all-in-one desktops as ball grid array packaging ensure small footprint. However, when it comes to fully-fledged desktops, BGA means that system makers will have to keep a large amount of different mainboards with various features and dissimilar microprocessors in order to provide the right choices for their clients. Such stockpiling increases business risks to smaller makers and decreases abilities to differentiate for mainboard makers.
While mainstream chips will reportedly be only supplied in BGA form-factors soldered to mainboards, which eliminates upgrade possibility, it is likely that high-end desktop (HEDT) platforms will still be supplied in LGA packaging. What remains to be seen is how expensive will such chips be. For example, at present the most affordable LGA2011 HEDT chip costs $294, whereas the most expensive performance-mainstream LGA1155 processor costs $332. In case upgradeable platforms remain on the HEDT’s price levels of today, that will essentially mean the end of upgrades of the mainstream PCs. (Source