EVGA 6800GS stock & 6800GS CO SUPERCLOCK digital resolutions

[vtohthree]

The EVGA 6800GS plain vanilla pushes out:
Resolution & Refresh
240 Hz Max Refresh Rate
2048 x 1536 x 32bit x 85 Hz Max Analog
**1600 x 1200 @ 60Hz Max Digital

http://www.evga.com/products/moreinfo.asp?pn=256-P2-N386-AX&family=17



While the 6800GS CO SUPERCLOCK can push out:
Resolution & Refresh
240 Hz Max Refresh Rate
2048 x 1536 x 32bit x 85 Hz Max Analog
**1920 x 1200 @ 60Hz Max Digital

http://www.evga.com/products/moreinfo.asp?pn=256-P2-N391-AX&family=17



Now here's the situation, I'm trying to run at 1920x1200 resolution(native resolution on the 2405FPW) on digital(dvi) on my plain 6800GS. However, my 6800GS is overclocked, in fact its a decent edge above the factory SUPERCLOCK(mine's running at 517mhz/1.17ghz).

So why can I make it run? Is it locked/limited by the driver? BTW, you can see the rig in my sig, I have the regular 6800GS(overclocked at home), but I don't have a 2405 yet, I'm considering to purchase one soon(prices are falling nicely). So what's up?

Can I make my 6800GS run the 2405FPW on it's native resolution in digital signal? Has anyone any word on this?