It depends if it shows up as one GPU to the system or 2. The 3870x2 shows up as one GPU. Whereas the 7950GX2 showed up as 2. The chance of it working is much greater if it shows up as one GPU.
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8800gt EFI64 ROM
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I believe it's two 8800 GT. If it's seen as such, it would probably be next to impossible to flash the ROM for one onto it.
That's great that this works. But it's not clear what you're saying -- in practice, does the card show up with (and use) 128 shaders like a GTS, or 112 shaders like a GT? Can you show a screenshot of nTune in Windows? Thanks for trying this..
It should have the same specs as two 8800GTS's (128 SPs, higher clocked, ect). Again, it will depend on if nVidia does what ATI did. nVidia's last dual GPU didn't so only time will tell.
There's no program I was able to find that shows you the clocks directly under OSX. However, I did run a benchmark on UT2004 in OSX both before and after flashing with OC. There is most definitely a change in frame rate between the two. See this thread, first post for the benchmark results.
I wouldn't recommend using NBitor 3.8 on your stock Apple 8800GT though. I reset the ROM's clock and it just took me about about 3 hours of messing around to get it back. I had to borrow a card from a windows machine to boot it into windows, and have the BOOT CAMP control panel chose to have it boot up with the FreeDOS CD because apparently holding down the "C" key doesn't work under leopard, or didn't work with the new OC'd ROM. I thought I was a goner. 
You will have to find out the size of the EEPROM on the card. It has to be 128k in size before you can flash it with the Mac compatible firmware.
It's more than just the 128K / 1024x1S. It has to have an MX at the beginning of the EEPROM ID. The PMC code versions do not work even if it has 128K.
ALso If your planing on buying and spending anything extra on an OC'd version of any card I would be prepared to run it at normal speeds. All those OC'd settings are in the ROM, so the second you put the Mac ROM in the card you end up with a regular 600MHz card. I've already tried OC'ing the Mac ROM to match an OC'd card and it didn't work. Couldn't boot up or anything. Wouldn't even boot into windows.
What software did you use?
I had no problems overclocking my card from the Mac ROM settings back to the "overclocked" factory settings. Are you sure you did ONLY change the correct values?
Sorry, just read your earlier post. Humh, strange, I used NBitor 3.8 as well.
thanks
Thanks for the info posted. I was able to get a evga superclock from Tigerdirect flashed and have 8800gt goodness added to my mac pro without a 5-7 week or a $350 cost.
Just some notes. I was able to do everything from my mac. I used the EBCD.
http://www.ebcd.pcministry.com/
and put the files on the root of the bootcamp partition for windows.
Thanks for the info posted. I was able to get a evga superclock from Tigerdirect flashed and have 8800gt goodness added to my mac pro without a 5-7 week or a $350 cost.
Just some notes. I was able to do everything from my mac. I used the EBCD.
http://www.ebcd.pcministry.com/
and put the files on the root of the bootcamp partition for windows.
Will this work in an "older" Mac Pro that can't run the GF 8800GT offered by Apple (due to EFI issues)? Tnx.SUCCESS with EVGA e-GeForce 8800GT 512-P3-N802-AR. It has a 1024k x 1S flash chip. I got this from Amazon.com. Green PCB.
And the power cable I mentioned earlier works.
http://shop.ati.com/product.asp?sku=3280778
Ran the Crysis demo for about 10 minutes at 2560x1600, everything set to high except for shaders and shadows set to medium. No AA. It looks great and plays beautifully. Unless this game slows down A LOT later in the game, I have no idea why anyone would fork out another $250 to run SLI. It has no lag at max resolution using one card. This is with the standard Apple bootcamp drivers. And the fan is barely audible. I do notice more heat coming out the back of the case.
Switched over to OS X and ran Quake 4 v1.4.2, everything maxed out... although for some reason 1920 x 1200 is the highest resolution available. Again, it's liquid smooth.
By the way, this card requires my HP monitor's DVI cable to be screwed down very tightly in order to get a picture. I thought the card was DOA at first, because I wasn't seeing anything even though it flashed ok and the fan spun up. The stock ATI card works even if the cable is loosely attached.
My system is a 2.8 dual quad, 10GB ram, 750GB WD RE2 hard disk.
blakespot
Sorry, it won't. Not until an EFI32 firmware image is available for these cards. Apple is supposedly working on it, though.
Hey guys, I'm looking to sell off my 8800GT card, and thought I'd give you guys a chance to buy it before I post it on PC forums. It is an XFX 8800GT XXX edition that I'd flash the Mac BIOS to before shipping it off. If you look at my earlier posts in this thread you'll see what its capable of. I'd flash it to any speeds you want that I know to be working (again look at my previous posts). I am asking $210 plus any shipping you want. This card has a double life time warranty so you will be getting a full lifetime warranty with the card. It comes with all the original accessories and packaging.
So, to sum it up, I have an XFX 8800GT that I'd flash for you guys to the Mac BIOS with any overclock you want. I felt like it would be nice to offer it here before the PC world because I know how much of a commodity it is here. Let me know by PM.
**Please move or delete this post if it is inappropriate.**
So, to sum it up, I have an XFX 8800GT that I'd flash for you guys to the Mac BIOS with any overclock you want. I felt like it would be nice to offer it here before the PC world because I know how much of a commodity it is here. Let me know by PM.
**Please move or delete this post if it is inappropriate.**
Card is sold to arcsbite. He is a great customer, btw, in case anyone finds themselves dealing with him later. I completely vouch for him.
Fie! I wanted it! I need to be quicker in asking my mom about these things!
sorry mate
been trying to get one for my Pro for a few weeks now.
sorry mate
been trying to get one for my Pro for a few weeks now.
That's fine. Who am I to complain about a missed 8800 GT? I'm getting two regardless!