Was getting bored of vista so i decided to get my 9800gx2 working in OS X.
Init-ed the 9800's within efi shell by loading option rom of 8800 card (im too lazy to write vbe initialization code), installed injector kext (with great help to target disk mode ), first got 9800 working no qe/ci bt had res change. Then mucked around some more and got qe/ci working.

I used old 2600xt to load option rom as only way to do with refit.



Will upload more pictures / info when i can be bothered and have more sleep.

P.s: benchmarks might seem slow, but still in early stages of getting this working

Great work chrome

9800 GTX is kinda ghey

its why i bought the less ghey version

extremely nice score

Nice!

w00t!

-D-

That's awesome actually. If more video cards had this option, then you would have more of a choice when buying a video card! What brand of 9800GX2 is it?

Its an Inno3d card. Will do some more work with it today, time permitting

woot great news, this is possible on a hackintosh too right? if possible please include instructions for noobs like me =)

OK, can someone help me make my GX2 work in my hackintosh then? I'm not having very much success. Ive been posting here:
http://forum.insanelymac.com/index.php?showtopic=101121

Can you go into details on what you did please?

Great job!

I really wish Apple would officially come out with some form of SLI/Crossfire support. It really is the only thing that makes gives the Mac Pro a disadvantage when it comes to intensive graphics work. Yes I realize the Quadro is a good card but if Dell offers the option of SLI graphics, Apple should too

All I can say wow that card is expensive in comparison to the 8800GT that you get from Apple. Maybe when Nvidia 10800GX2 comes out this card will fall into the affordable range.
Congrats on an amazing card.

Now to get SLI support hacked on the Mac Pro.
The 8800GT does have an SLI port on it from Apple I wonder are they planning to enable it via an EFI update after WWDC?
I say this because of the similarity between the Intel Skulltrail platform (that supports SLI and Crossfire) and the Mac Pro motherboard.

For those that want to do this on hackint0sh the only thing which applies is to use NvKush or NvInject

Ive tried this, also tried using graphics strings. The best i can get is a bluescreen with a stuck cursor when login window loads.

Maybe theres something wrong with my kexts. Could you upload the nvidia kexts that you're using?

I highly doubt it would be a problem with your kexts (hoping that you are using 10.5.3).

But here is a copy of the kexts i use
http://rapidshare.de/files/39642127/Kexts.zip.html

Thank You!

I'm using 10.5.2 Didn't think i need the .3 update for this.

Will try and report back later.

busterboo, if you read any other post it would have told you that you needed at least 10.5.3.

Updating now....

Edit: Still have the same problems after the update.

at least you have the correct kexts now.

delete your extensions.mkext and reboot with NVinject.kext installed (correct permissions)

this is with loading the 8800 rom?

not anymore, i have extracted drivers which load the cards own rom. So it is loading the rom on the cards

Does the 9800 use the same core as the 9600?

No.

Kiko: Could you have a look at this thread:

http://forum.insanelymac.com/index.php?sho...60&start=60

Maybe you've got some ideas that aqua-mac or myself could try.

Yep... I also think that with the Nehalem redesign (which requires a new mobo), Apple will feel compelled to re-evaluate its position on SLI and may release SLI drivers for older Mac Pros along with the new ones on the Nehalem platform.

http://www.anandtech.com/cpuchipsets/intel...?i=3326&p=3 - pics of the nehalem socket


Maybe they will also decide to trash FB-DIMM and go with low latency DDR3 memory. Its doubtful that Apple will do this but the majority of Mac Pro customers do not order/install 16 gigabytes of ram into their machine and thus don't need FB-DIMM RAM. With triple channel DDR3, its more than likely that most Nehalem motherboards will support 6GB of ram which is quite a bit. Granted, some people might see the need for 16GB of RAM but most Mac Pro customers DO NOT have that much ram in their computer (I would think most people have anywhere in the range of 2-8GB). I could be totally wrong on this though...

i have 10 and im thinking of getting 16

Could you post the driver you added to rEFIt to make it setup the card properly? I'd like to try this at home with a 8800.

Cant you just flash the 8800?

OK enough, you guys are making me jealous, i got myself a Mac Pro early 2008 version with 8800GT running in it, and i seriously want to get a 9800GX2 display card running in it since you guys say it works, can anyone come up with a NICE Nice instructions manual on how to install?? and im guessing im buying from XFX.

Also in future updates of the Mac Os X like 10.5.4 will the kexts be unfunctional again?? assuming that you guys say that 10.5.2 runs with problems with the Latest Kexts and that Kexts are updated all the time and that the lastest kext runs with 10.5.3......

guys i may sound like a total Mac Nut Job but i really wana play World of Warcraft without any laggy FPS cause my 8800GT actually does have them..

So HELP me, guide me.

Dont cry, Snow Leopard will support the new Nvidias, and maybe 10.5.X could too.

you think snow leopard gives support to 9800GX2 SLIed??

Yes it could happen.

Now that ATI have aftermarket cards for Mac, maybe Nvidia could make some pressure.

the problem wasn't with kexts, it was with the card being initialized properly so it could function (pre-boot)

Update: I have been able to create a rom image which initialise the card when the computer is turned on.

In other words, you've got a flashable, 9800GX2 ROM? Or one that you can setup the card with once the rest of the computer is already in OSX?

Mac Guguen: whatever the card you will put, WoW won't be still running at 60fps all the time. The game is too old and doesn't really use 100% of the performances of GPUs, so even if you would see some FPS increase, it won't be dramatic. The engine would have to be rewritten from scratch to use 100% of nowadays GPUs power.

Dude, Cyclone....

Case you didnt know
I played wow on my old computer running on GPU of x800 ATI, now i got meself a mac pro running with geforce8800GT
BiG BIG difference

from 30 FPS to 200FPS in Shat' so i dont really know what exactly you mean by a dramatic increase...
is 170 FPS difference dramatic??

Old Computer vs Mac Pro ?

Even with the same card on both there will be a difference, just wondering.

well what cyclone says is that Even an Old CPU like x800xt should run with FPS same as Geforce8800Gt....
Id be like WTF man theres a difference of 170 FPS better and you call that the same FPS??

Please reread what i've written. I NEVER said a X800 vs 8800 GT won't change in WoW. What I meant is the game doesn't use the FULL potential of NOWADAYS GPU. So YES, a GTX2x0 will improve the performances in WoW, but not AS DRAMATICALLY as going from a X800 to a 8800 GT!

Even 8800 GT versus ATI X1900/NVIDIA 7900 series won't change that much on a Mac Pro and WoW.

And speaking about Shattrah, try to look in places where there are lots of people (20 or so and look at them), FPS can drop to 30 FPS, even on a 8800 GT. Why ? Because the engine is old and not optimized for todays GPU. While with a GT200, you will get more than 30fps, you WON'T GET 60FPS for sure, and that's what I call "not dramatic".

Probably ain't gonna happen. And here's why: the Skulltrail has one important component for SLI that the Mac Pro motherboard lacks. The Skulltrail has an actual nVidia nForce 100 SLI bridge chip sitting between the 2 x16 busses. The Mac Pro is Crossfire capable, but due to the lack of an nForce SLI bridge CANNOT run SLI without using hacked drivers (of which I don't believe any exist for the current generation of cards)

Did you upload that rom image? and how to use it?

I have a 9800GTX on my Hack but I want to test it on the Mac Pro

Any more details on how this was done? I'm quite interested, as I, too have a Mac Pro, and a 9800, though it's a 9800 gtx, in my case. I've already tried flashing the 8800 gt EFI32 BIOS onto the card, with predictably black-screened results.

Ok so my 8800GT has bit the dust and I am back on the original ati2600. Looking at new GPU ideas for my Mac Pro... ran into this thread and am interestd in how you did this, with a step by step how to if possible. Reading your post, I am thinking you booted with a 2600 and used rEFIt to load the rom for the 8800 and then used the nvinject to recognize the card....