how can i know my two voodoo2's is working on SLI

[tfgtfgtfg]

i install my tow monster 3d II 8m(one is REV.B and the other is REV.E) throught your prosess. but i see that my two voodoo2 working as fast as  one voodoo2 , but it dosnt have any mistake.why? help!
my drivers is fast voodoo2 ge xp+memmap fix.and I have tried the koolm's drivers.
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barton1G+epox+8RDA3I(nforce2 ultra 400)+msi geforceTI500+two monster 3d II(one is REV.B and the other is REV.E)+diamond mx400+DDR 256M

[ps47]

simple.try running some game in the 1024*768 resolution.preferably some glide game,such as unreal,deus ex,etc.if the 1024*768 resolution works,your voodoo2s are running in SLI

[tfgtfgtfg]

do you  have another way to check if these voodoo2's working on SLi?
because I have no these games,i only have diablo2 and the nfs2.and I find that if I set the vsync off ,the frame is double.can anyone explain this , thanks!

[ps47]

just download UT or deusex demo from somewhere and try it.

[Nightbird]

I find that if I set the vsync off ,the frame is double

When the vsync is enabled, the frame rate is limited to the refresh rate (60 hz, 75 Hz ..)