Our definition of mainstream video cards encompasses the $100-$199 price range, and is really where you'll get the most bang for your buck. This is where you will find the latest mainstream video cards, like the Radeon X700 Pro and GeForce 6600 and 6600GT, along with a few higher-end products that have been replaced at the top of the food chain, and have then dropped in price.
The mainstream video card list is usually where we see a few noticeable price drops mixed in with some high-end cards dropping below the $200 mark and entering the mainstream market. This scenario unfolded like clockwork in past guides, but this month we have stable pricing through most of the list, and even some upward movement with some cards. No new cards fell from the high-end chart, and even though there were a few small price cuts, the larger spikes - like the $22 increase to the ATI Radeon X700 Pro 256MB - made this a tough week for mainstream buyers. Our top buys are still the GeForce 6600GT 128MB boards for either AGP or PCIe systems, while the Radeon X800 128MB card is a nice option for ATI buyers.