- Aug 21, 2004
Guys, what is the best AGP card for the Powermac that I can buy to flash?
If you want dual DVI 7800GS, try to grab this one: http://www.bit-tech.net/custompc/reviews/88847/gainward_bliss_7800gs_agp.html Look at Aquamac's site for proper ROM for this card (these from themacelite will not work with Gainward card). It will show only 256 MB memory, that's the only issue.
Mine worked great but never had a DVI to test but will buy one shortly. Would love both of my DVIs to work so once I get them, I'll try finding the appropriate rom. How would I know if I have the TMDS chip, would there be a chip on it with big bold "TMDS" on it? I'll never use a 30" monitor but would be good to know.**snip**
2nd best option is the 6800GT. Big bonus is that PC ones can be had pretty cheap...neighborhood of $30-50. My old friend Arti wrote the DVI enabled ROM in NYC while I did the testing and register poking in LA. Dual DVI is possible if you look hard enough. Needs to be a GT or Ultra with 256 Megs of RAM. We never wrote a good ROM for 128meg versions. Minus is that they are single link unless you find the Holy Grail....one with the PanelLink TMDS chip on back. 99% don't have them, even the Ultras.
Look on back between slot and DVI ports.
99.99% chance you won't see this "Silicon Image" chip there. There WILL be one on front on Dual DVI cards....but this spot on back is where it needs to be for DUal Link support. (30")
The ultra I just got DOES have this Silicon chip on it. 419 and 2.0 numbers at the bottom of it. Also has another chip more in the middle of the card.
What does this mean?
(Just checked my op thread tonight...)
I just got the nvidia geforce ultra ddl and it does have this chip.
Not sure what it does... It just means I can run two 30" monitors?
Did you get the Mac one or a PC one? Oh and mine(PC 6600 ultra) did NOT have that little chip. Just an empty spot with solder contacts .
California...I am confused whether you mean you have the official Mac 6800 or a PC one.
The Mac one has 3 of these chips, a PC unit will have at most two. If a PC card has this chip ON THE BACK AS PICTURED, then it can be used to run a SINGLE 30". If it does not have this chip on back, it will only run a 24" MAX. The prescence of one of these TMDS chips on front just means you have a DUal DVI card, which is different from being a DUal-Link DVI card.
The REAL issue is that you will never find one of these.
When I flashed the first one of these for Mac, it was ordered from England and sent to me in the states. I sent Aquamac the original Mac ROM, though he eventually made some improvements. He lived in UK so much easier for him to get them there. The majority of "Gainward Bliss 7800" cards were actually made with a G71 core which isn't flashable with the ROMs we wrote. So, few on the market and of these few with G70 core. A near impossibility to find a good one.
What's the difference between the Mac 6800 Ultra DDl vs a flashed 6800GT card?
If I remember correctly, the real card will power a 2560x1600 monitor with a dual-link DVI cable whereas the flashed card will only do 1920x1200. It's been years since I flashed a 6800 so I can't remember off the top of my head.