We have a few units where only a single chip holds the other 4 back, so I'll brobably also include per-chip settings in the near future. You can verify this by adding Andareed's per_chip_stats feature to the options, running cgminer from ssh and maximize the window so you'll see the stats at the end of the line for each device. HW errors are displayed between brackets for each chip:

GSD 0: 8D74488A4949  900 MHz | 382.0K/381.9Kh/s | A:344128 R: 256 HW:64 WU: 1.3/m N: 303[62] 264[1] 310 238 284[1]