Hold onto your hyperthreaded horses, because this is liable to whip up an angry mob -- Intel's asking customers to pay extra if they want the full power of their store-bought silicon. An eagle-eyed Engadget reader was surfing the Best Buy shelves when he noticed this $50 card -- and sure enough, Intel websites confirm -- that lets you download software to unlock extra threads and cache on the new Pentium G6951 processor. Hardware.info got their hands on an early sample of the chip and discovered it's actually a full 1MB of L3 cache that's enabled plus HyperThreading support, which translates to a modest but noticeable upgrade. This
