Really?  I thought aligned loads (load_) were always faster than unaligned (loadu_.)
http://software.intel.com/en-us/articles/reducing-the-impact-of-misaligned-memory-accesses

Also, we assume textures are 16 aligned (should probably verify this...):

```c++
u32 getTextureAddress(int level) const { return (texaddr[level] & 0xFFFFF0) | ((texbufwidth[level] << 8) & 0x0F000000); }
```

-[Unknown]