It has long been speculated how well the Radeon HD 4670 and HD 4650 will perform, but it will hopefully become clear, now that AMD finally releases these two middle segment graphiccards. They are also really low-priced.
Reference models of Radeon HD 4670 runs the core at 750 megahertz and will initially be devlivered with 512 megabytes gddr3 memory over a 128-bit memorybus. The card has 320 streamprocessors and will later also show up with 1024 megabytes standard ddr3 memory. Power consumption is about 70 watts and the card has dual-dvi ports, and support for displayport and hdmi. According to AMD it delivers around double the performance compared with a Geforce 9500 GT. Source: IDG