I'm running a...
Mac Pro (Mid 2010)
ATI Radeon HD 5770 1024 MB
2 x 2.4 GHz Quad-Core Intel Xeon
12 GB 1066 MHz DDR3 ECC
OS X Yosemite (10.10.3)
I am seeing green pixel noise in the dark areas of the screen (tried different screen--same problem). I thought it was the monitor (HP ZR30W), so did HP, but now I have a new NEC PA302W and--guess what--same problem.
Best guess from Apple is the graphics card is causing it.
Can you suggest what to use as a replacement OR what to upgrade to?
Thanks in advance. Chuck