GVP A1230 Jaws jumpers?

[Floid]

What do these refresh settings mean, anyway?  I see them on all the GVP accel boards.  Is it a speed thing?

thanks,
t

Refers to the layout of the DRAMs, more of a 'timings' thing than a significant performance thing:
http://www.oempcworld.com/support/2K_vs_4KRefresh.htm