First there was speculation that Hynix has trouble with 66nm DRAM production and now DigiTimes writes Samsung is also said to have a large batch of defective 68nm DRAM chips:
Following the speculated DRAM production issues on 66nm process node at Hynix Semiconductor, rival Samsung Electronics is also said to have a large batch of DRAM chips being rejected by customers. Industry players are worried that this batch of defective DRAM will be dumped on the spot market and aggravate weak pricing further.
Unstable yields on 66nm process node resulted in a batch of scrapped wafers (in 1Gb density) at Hynix in early April, according to industry sources. Samsung is also said to have encountered problems in production, with the sources indicating that a batch of 80 million 1Gb-equivalent DDR2 chips fabricated on 68nm were rejected by PC OEMs recently.
Sources at downstream customers expressed concern about how Samsung is going to deal with this batch of defective DRAM chips. If Samsung resorts and then dumps this batch of chips at low prices on the spot market, corresponding pricing will be severely impacted, they said. They added that they have not seen Samsung make a concrete decision yet.