TigerDirect offers the AMD A10-5800K Trinity 3.8GHz Socket FM2 Quad-Core Unlocked Desktop Processor, model no. AD580KWOHJBOX, for $129.99. Coupon code "KYA120268" cuts it to $99.99. With free shipping, that's $24 under our mention from just over a year ago the lowest total price we could find by $17. It has a 4MB L3 cache and 4.2GHz boost speed. Coupon expires March 21.
Note that this CPU features unlocked multipliers, allowing for more overclocking capabilities.