Walmart offers the AMD FX-6300 Black Edition Vishera 6-Core 3.5GHz AM3+ Processor for $68.13. To cut the price to $57.74, opt for in-store pickup. (Amazon has it for the same price.) That's $22 under our mention from June and the lowest price we've seen. (It's also the best deal we could find today by $8, although most merchants charge $86 or more.) It features a 6MB L2 cache and an 8MB L3 cache.

Update: The Walmart item is out of stock; however, Amazon still offers it to Prime members only for $57.74 with free shipping.