Wavey lines in 3D games @ higher FSB

[MCS]

This is a strange one to describe, but I noticed that when I raise my FSB to 146Mhz, and play UT @ 1600x1200 I see "shimmering" going down the screen, or slight "wavey lines". Its not obvious at first but you look closely and you can see it. Now at this time I can't decide whether or not its the high FSB causing this interference or if its the fact I had to bump my I/O up a bit to get 146Mhz.

At 3.3V I/O and 133Mhz bus this problem does not occur.

Any ideas? Anybody reading this thinking "Yep that happened to me".

It's definitely worse at 1600x1200 than it is at say 1024x768.

 

[Leon]

Known problem

Only happens with Ultra cards, read the thread for workarounds and fixes. If you get them by bumping FSB, you might have to lower it....

Leon

 

[MCS]

Thankyou!

Perhaps it DOES happen at 133FSB and I just didn't notice. I was looking more closely @ 146Mhz for corruption so I will re-check.

Do you think its reasonable that it might be worse at a higher FSB and/or I/O voltage?

BTW as far as I can see it was only happening in games, not at the desktop.