It is called Multiply and Conquer and it is an attempt to get you to buy more products.
AMD wants you to build a Crossfire system. All you need to do is buy an AMD Athlon 64 X2 5200+ Windsor Processor, along with a Sapphhire 100186L Radeon X1950XT HDCP Video Card, ECS KA3 MVP (V1.0A) ATX AMD motherboard 2GB of OCZ (2 x 1GB) 4-4-4-15 dual channel memory and a Corsair CMPSU-620HX 620W power supply.
If you buy all this stuff together you can save up to $95 instantly or with mail in rebate.
We wrote about a similar action here.
It is just another way to make Nvidia's life a bit more woeful. You can read about the promotion here. µ