Welcome to the TechPowerUp 2011 PC technology Christmas special. We hope that you will enjoy reading it while tucking into your turkey, Christmas presents and a little too much wine... In this article, we go through the technology of 2011 that has had the most significance, the most impact and was generally the most talked about. It's not necessarily the best tech of 2011 which is the most significant though, since lemons can be just as significant as the ground-breakers in how they fail to deliver - and the backlash that goes with it.

January: Intel Sandy Bridge i5 & i7

Released on January 9th, the new Intel Core i5 & i7 processors were based on Intel's second generation Core architecture built on a 32 nm production process (HEXUS review). They included an IGP (Integrated Graphics Processor) physically on the same piece of silicon along with HyperThreading. These new dual and quad core processors soundly beat all previous generations of Intel processors in terms of processing performance, heat, power use, features and left AMD in the dust. Therefore, Intel badly needed some competition from AMD and unless you have been living under a rock, you will know how that turned out in October with the launch of Bulldozer. Sandy Bridge was a sound win and is generally considered to be the only architecture worth considering at this point. The i5-2500K is currently at the sweet spot of price/performance. It comes at a stock speed of 3.3 GHz, but typically overclocks to an amazing 4.5 - 5 GHz with a decent air cooler and without too much difficulty in getting there. Models in the budget i3 range were released at various times later. See this Wikipedia article for details.

Shattering its own day-one sales records, Activision Publishing, Inc., a wholly owned subsidiary of Activision Blizzard, announced that its highly-anticipated Call of Duty: Modern Warfare 3 has become the biggest entertainment launch ever with an estimated sell-through of more than $400 million and more than 6.5 million units in North America and the United Kingdom alone in the first 24 hours of its release, according to Charttrack and retail customer sell-through information.

This marks the third consecutive year that the Call of Duty franchise has set day one launch records across all forms of entertainment, something no other entertainment franchise in any medium has ever accomplished. Last year, in North America and the United Kingdom , Activision's Call of Duty: Black Ops had estimated day-one sell-through of $360 million and in 2009, Call of Duty: Modern Warfare 2, set day-one records with estimated sell through of $310 million, according to Charttrack and retail customer sell-through information.

On November 8, 2011, millions of fans attended more than 13,000 midnight openings at retail stores worldwide. According to Microsoft, after just two days, the number of gamers playing simultaneously on Xbox Live set a new peak concurrency record.