According to news and rumor site DigiTimes, AMD at the last minute uncovered a manufacturing defect during the validation of its ATI Radeon HD 5830 reference boards. This, DigiTimes says, is the reason why the card didn't launch last Monday as originally planned.
Sources who claim to be in the know say the flaw has to do with circuits on the board. For whatever reason, the circuits are coming up bad on AMD's software testing platforms, prompting the chip maker to grab related boards for more testing.
Naturally, AMD had no comment on the reported issue, but the company did say there is no issue whatsoever with any AMD-based videocards already on the market.
So when will the HD 5830 ship? Card makers are predicting no sooner than an early February launch.