No. DVI on all 6600 GTs i tested was Dual Link. But for the ones which have two, only one of them is, as, unlike the 6800 Ultra OEM, these cards have no external TMDS.
For that, i had great hopes in the 6800 XT, i posted in the other thread. But sadly this one's DVI is not Dual Link. Otherwise it would be the by far best card, able to run in a Sawtooth. Performance in benchmarks is 10 to 20% better than a Radeon 9800 Pro's.
Yes. ...and for the 64k 6600 GT ROMs i just transferred the complete BMP-section from one of the 128k ROMs to one of the other card's ROMs which allready where small. 6200 or 7800 GS. I don't really remember exactly, cause it's more than 10 years ago. Also the softstraps an some checksums had to be adjusted. But after that they worked.
Yeah I was not expecting there to be a Dual Dual link 6600 GT, but interesting to hear that all 6600 GT's in your testing can do dual link DVI

I always thought it was only one or 2 specific ones
ill defo have to nab me 6600 GT at some point now knowing this
as a side note although not AGP 2x compatible sadly, (I say that but some photos show a universally keyed card or one where although its not keyed the pins are missing as if it should be...)
there is the Quadro FX 4000, which is basicly a Quadro version of the Apple GeForce 6800 GT Dual Dual Link card
I remember MacVidCards did say he managed to flash back in the day but I dont think anyones done one recently
but AFAIK this is the only Dual Dual Link DVI option for a PowerMac G4 (well in theory you could hack an Apple 6800 GT/Ultra into a G4 but that would require soldering wires to provide power from the AGP Pro pins you have just hacked off LOL)
speaking of Dual (but sadly not dual link!) DVI cards, The Quadro FX 600 PCI card is another one I want to try and flash or see someone flash, its a Quadro version of the GeForce FX 5200
but it crucially has external TMDS transmitters (like the apple FX 5200 Ultra) so is not plagued by the weak TMDS transmitter built into NV30 cards
if one could be flashed it would give the G3 Blue and white a Dual DVI card
