
Gamespot interviewed Ken Kutaragi about Cell chips and other details about the PS3.
Kutaragi stated earlier that although the Cell microprocessor comes with eight synergistic processor elements (SPEs) for multicore processing, the chip only uses seven of them. Kutaragi explained that ignoring one SPE as a redundancy will improve the chip’s production yield and allow costs to drop dramatically. In other words, Sony can ship a Cell chip with one defective SPE (out of its eight) as a working product, since the chip only uses seven SPEs to begin with.
So, basically, we’re now purposely building defects into the design of the PS3 processor. No wonder Jobs dumped IBM.
And, let’s be clear about something right now. This is NOT redundancy. When speaking of RAID, which means Redundant Array of Independent (or Inexpensive) Disks, we are talking about data integrity, fault tolerance, and performance. The whole POINT of redundancy in RAID is to have an increase in these three things. If not all, then at least one of them.
Kutaragi’s “creative redefinition” of redundancy means building a RAID array of 8 disks with 7 working disks and 1 disk you already know is bad. That’s not redundancy. That’s a manufacturing defect that you’ve found a workaround for.
Frankly, if the only way that Sony is going to keep up with PS3 manufacturing is to integrate manufacturing defects into the chip design, then I think I’ll steer clear of this console for a while until the defects get corrected (like I’ve done with every other Sony console. The later versions of the PS2 are great. Too bad the first 5 or 6 sucked.)
This is the ultimate aesthetic. The number of SPEs we equip to the Cell and how many we will actually use are two different things. I wanted to adopt the idea of ‘redundancy’ to the development of semiconductors.
Only Kutaragi would equate manufacturing and design defects with aesthetics.
Remember, if you would like to submit any blathering Kutaragi quotes, then drop a line to kutaragiwatch@topofcool.com.