| posts: 15,235 | Location: UK
What's your RAM running at? 166Mhz still?
You most certainly should be able to get 200x11 with 1.75v, I would've thought, unless your board doesn't like 200FSB. Run memtest to see if it's the FSB causing the problem. You need to create it on a bootable floppy and run it at bootup [the link is on page 7 of this thread I think.]
I presume you haven't run prime95 on your overclock yet? I suggest you do, just to see what clock speeds you can get your CPU upto at what voltages.