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I'm a professional photographer running Aperture and CS4 and have CONSTANT screen abnormalities and lines across the 2- apple 30 inch monitors I have. I'm very disappointed with this product. The card will work longer if I unplug on of the monitors.. but then that defeats the purpose of having the twin monitors. and yes if you do open up the computer every 2 weeks or so and vacuum the intake of the card it will have issues slightly less often, but still. When I can afford it I'm replacing the card right away.

(22 of 27 people found this review useful)

I have had this card for 2 years, with great performance. I use the ATI Displays software which allows me to use it's full parameters. After awhile, I started to have problems turning my monitors back on after shutdown. I also heard the fan running all the time... After checking firmware etc, I was really getting upset. Then I read the comments in the Apple Store. It's really true, the in-take of the fan area fills with dirt and dust, and causes the card to overheat and malfunction. Just clean it off with a cue tip or mini-vacuum, (easy to do) and it works like brand new! Horray!

(21 of 24 people found this review useful)

We have about 20 Mac Pros with this card and they have all filled with dust and overheated. Luckily we discovered this design flaw after only losing 3 of the cards.

(20 of 22 people found this review useful)

Like most other people, my x1900xt started to over heat. These problems were more apparent in Windows ( all versions ) than it was in OSX. However, after searching the web and reading the reviews as to what could possibly be the reason for the artifacting and the computer freezing up with in two minutes of use, I took out the card and found a thick layer of dust. Cleaned that off and put it back in. The computer still froze up. Then I came to the conclusion that the fan and heat-sink, which accompanies the card, was not doing a good job. So I bought a third party GPU heat sink, one which doesn't enclose the GPU. This did the trick. Apparently the cooling system that comes with the card does just the opposite of what it's supposed to do. Once this problem was fixed, the card worked beautifully.

(8 of 8 people found this review useful)

I have this card too. Loved it at first. Hated it when it started to overheat and shut down while playing WOW. Then one day I discovered the drawback of all that great air flow Apple's building into the MacPro: The gray felt/foam air filter at the front of the video card IS NOT an air filter. It was a layer of dust as thick as dryer lint. Vacuum it clean once in a while and it'll run fine.

(6 of 6 people found this review useful)

I am reading all the negative reviews. I have a Mac Pro 2.66 I bought it in 2006 I stuffed in this baby and it works flawlessly. I packed the machine with the max 16gigs of ram The card is pumpin output to a 30 inch monitor 3 hard drives no qualms here

(1 of 3 people found this review useful)

The machine this card is in was rarely used for gaming or...well, anything graphics intensive, in fact. When I did play WoW, the frame rate was decent at 1920x1200. But the card was often hot.

Last month, the screen went black. Restarts and reseating did nothing. I unplugged from one DVI port and into the other, and it worked again.

Now the other DVI port has gone dead, too. I can share the screen of the Mac and it sees the Cinema Display attached, but I get no visuals. Upgraded card firmware successfully, but no change. The card has just died on its own.

I was not performing regular maintenance on the cooling for the card, because I never would have expected it necessary. Perhaps this would have prolonged its life. Rally lame regardless. Poor show, ATI.

(3 of 3 people found this review useful)

I must add my poor review of this card to the rest of the terrible reviews.
About one year of great use before the constant video anomalies began, then the system crashes. Despite being constantly blasted with duster, having a fan aiming into the open case and having fully working fans, I am still getting distortion and then freezing over and over.

I just hope my Apple Care plan covers the replacement of this thing with a better card.

Given the consistency of the reviews, and the threads in the help forums all complaining of the same thing...

...I would absolutely avoid purchasing this card.

(5 of 5 people found this review useful)