Screen Regulation

[IonCurici]

Can anyone throw light on this? --

1. Compaq 171FS (17&quot on a
M/B ZIDA BX98 Slot1 + Celeron 266 @ 333mhz
128+64 DIMM
AGP NVidia Vanta 32mb
==>the screen regulation is hardly noticeable

2. same monitor on a
M/B JetWay 618 AS + Celeron 1000 mhz (no overclocking)
256 SDRAM
AGP NVidia GeForce 2 mx 400 64mb
==>the screen regulation is ~3mm

both running on win2k professional with same set of drivers -- GeForce52.16_win2kxp_english_whql -- NVidia claims both cards are supported by these drivers.

also tested both machines on RedHat 7.2 with the generic NVidia driver -- same result -- on the 2nd machine the edges of the screen widen/shrink ~3mm when minimizing/maximizing windows in KDE, and man, its really annoying.

I thought the screen regulation depended only on the high-voltage regulator in the monitor. Now it turns out it also depends on the video card? or motherboard? Any ideas?

Thanks

 

[IslandCustom]

I know very little about monitors, but could the display adapters be providing different brightness levels to the screen? A brighter image will appear to be larger than a darker one.

 

[IonCurici]

Could be, but the difference in brightness is not visible.