56,57c56,57
< # Use a single-channel DDR3-1600 x64 by default
< parser.add_option("--mem-type", type="choice", default="DDR3_1600_x64",
---
> # Use a single-channel DDR3-1600 x64 (8x8 topology) by default
> parser.add_option("--mem-type", type="choice", default="DDR3_1600_8x8",