The new Radeon HD 5800 may mimic the G80 chips.
Hardware-Infos is reporting that an Asian source has provided them with details that point to the possibility of the new AMD RV870 chips to use a 384bit memory bus, in an effort to improve bandwidth from the previous generation of cards. Coupled with DDR5 chips, the new cards could deliver 240GB/s, providing an increase in line with the expected improvements in processing power.
While 384bit bus will not deliver such cheap card as those of the HD 4800 series but AMD might deliver 256bit ones for lower price points. It is also easier to fit 12 memory chips on a graphics card PCB than 16, like it happens on Nvidia's GTX 28x cards.
No new memory technology is expected to come to the rescue of PCB costs, so AMD might not really have another option to sustain the increased processing power that is expected from the new chips. Samsung has touted 7GHz GDDR5 chips but, at reasonable price points, manufactures are not yet expected to deliver more than 5GHz.
Source: Hardware-Infos
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