As we know AMD will encourage the makers to release non-reference R700 to cut down cost, but this is not the high-end 2GB GDDR5 version while it is the 1GB GDDR3 R700. Its price possible lower than 399$ and it will be earlier than GDDR5 version.
1GB GDDR3 R700 will use two RV770PRO and its name will be HD4850 x2 and the makers can design it according to their minds.
HD4850 X2 will be released at the end of this month and it will launch market earlier than HD4870 X2. It is confirmed that HD4870 X2 must use reference design and the makers must buy the related PCB, memory and power supply components, etc.