Electronic News:   Let’s look at design for manufacturability from a different standpoint. IBM has said it needs seven of the eight cores on the Cell processor to work for Sony’s Playstation. Will there be an aftermarket for chips with fewer operational cores?

Reeves:  There are a lot of chips with six cores operational, and we’ve been thinking about whether we should really throw all of those away. We also have a separate part number for chips with all eight cores good. The stuff that’s going to be for medical imaging, aerospace and defense and data uses eight cores.

Electronic News: What’s the defining factor that makes some chips better than others?

Reeves ：Defects. It becomes a bigger problem the bigger the chip is. With chips that are one-by-one and silicon germanium, we can get yields of 95 percent. With a chip like the Cell processor, you’re lucky to get 10 or 20 percent. If you put logic redundancy on it, you can double that. It’s a great strategy, and I’m not sure anyone other than IBM is doing that with logic. Everybody does it with DRAM. There are always extra bits in there for memory. People have not yet moved to logic block redundancy, though.

【声明】中国电子资讯参考刊载此文不代表同意其说法或描述，仅为提供更多信息，也不构成任何建议。对本文有任何异议，请联络question@discloser.net。