"Hey Mike,
I have a new dual 2.5 with 2.5 GB of RAM and a 6800 Ultra Card. My primary 3d application of choice is Maya 6.0.1. My OS is 10.3.6. I've also upgraded my firmware.

Generally I find the combination of hardware and software acceptable with the following exceptions.

When working in any of the perspective or orthographic windows, I'll see white or green flashes that occur whenever I'm tumbling around in the scene. This is just slightly annoying because they happen so fast. I'm figuring there's definitely a driver issue going on. They are infrequent, but when they happen its apparent.

Activating the Hardware Render Buffer window is also possible, but there seem to be issues with certain preference attributes that prevent hardware rendering from occurring. If you activate multi-frame rendering option box in the Hardware render buffer's attribute window, the resulting test render will result in a blank white window. Multi-frame hardware rendering is important if you wish to utilize hardware motion blur or anti aliased edges. Deactivating multi frame rendering corrects the problem and rendering occurs as normal. (sans blur and anti aliasing)

Another hardware display issue also occurs within the orthographic or perspective windows when polygons are assigned a material with RGB based image map. A simple test is to take a default poly sphere and assign it a simple lambert shader. Once that's done, assign a "normal" texture map to the color channel. Any jpg will do. Once that happens, the geometry will turn white in perspective window rather than displaying the image map on the poly sphere. (Make sure you're in shaded / texture mode "6" on the keyboard).
The only fix for this bug is to change the Hardware Texture Quality from "Default" to "Low, Medium, High or Highest".
This will at least allow you to see the texture, although it will appear somewhat blurry. The hardware texture quality settings in Maya are a bit of a joke since the "Default" mode usually produces cleaner OpenGL textures than the "highest" setting. The only time those additional settings work better than default is when you are deforming the texture map through its 2D or 3D placement nodes.

This is rather troubling for me because I make my living in previsualization. I bought the 6800 under the perception that it would speed up my hardware rendering. Now, it seems, I'm gonna have to downgrade to on of the Radeons in order to get those features to work again. Although I haven't tested it on my G5, none of these issues occur on my G4 with a Radeon 9800 Pro (128MB). We Need New DRIVERS!
Brian P "

I've added this to the previous page of Mac Nvidia 6800 card owner feedback and tips.
I don't own Maya personally but welcome other Mac 6800 owner comments on it or other apps. (Please include your system/OS version and details on apps/games, etc. you used in reports. Thanks.)

• Other World Computing G4 1.4-1.5 GHz (at 1.5GHz) in (gigabit) G4/AGP (rated 10)
  
  (Full reviews of G4 and G3 upgrades compared to stock CPUs, including real world apps/game tests, install info, etc. are linked at the CPU upgrades page. OC/CPU module articles are on the Systems page.)

(Warning - Overclocking may not be reliable and could lead to hardware failure or corrupted data.) You can find the full reports by searching the database selecting the indicated Mac model and upgrade card brand/type. If you've upgraded the CPU on your Mac, please post an entry in the database. Search the database for entries from most every upgradable Mac model *before* you buy. (Searchable by mac model/upgrade brand). For detailed reviews with performance tests and install tips, see the CPU Upgrades page.)

DVD+R/RW + DVD-R/RW Drives:
• IDE Pioneer DVR-108BK (DVR-108) in G4/AGP (OS X 10.3)
  (using Patchburn 3 for iApps burn support. Illustrated CD drive install guide here covers G4 towers up to the Digital Audio Model, Beige G3 MT and B&W G3 Macs)
  
• IDE Philips DVDR1640P in G4/AGP (OS X 10.3)
  (noted using patchburn II for iapps burn support - patchburn II no longer available, replaced by Patchburn 3.)
  
  Hard Drives:
• IDE Hitachi Travelstar 7K60 in Powerbook G4 (OS X)
  (Reader FYI - review of this drive on the IDE and Firewire topics pages.
  PowerBook G4 Ti 15in. LCD illustrated Hard Drive install guide here
  PB G4 15in (Aluminum) Disassembly guide.
  Powerbook G4 12in LCD illustrated Hard Drive install guide here)

You can find full owner reports (latest shown first) by searching the database by drive/brand/interface/mac models (the latest reports are shown first in searches). For guides to installing CD/CDRW/DVD drives or Hard drives in many mac models, see the IDE Articles page. The Firewire articles page also has guides on case kits, installing drives, etc.
If you've added a IDE, SCSI, Firewire or USB hard drive, CDRW, tape drive, etc. make sure you add a report to the database. (If you post an updated entry - make sure you use the same name, etc. as you did before so I can find your past entry. Thanks.)
(Incomplete entries are deleted. Do not post questions in the database, it's for drive reports not questions on what drive to buy - for that try searching the database for reports from owners of your mac model on the drive type/brand/interface, etc. you're interested in.)