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    Error Flashing NVIDIA GTX780M on iMac 27" 2011

    Hi, I'm try to update my iMac with NVIDIA GTX780M 4Gb. I use USB Linux instruction method on @The_Croupier @dosdude1 @Nick [D]vB @nikey22 @internetzel can help me please. I try...
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    Flashing Two GPUs - Two Dead Bricks | The PowerMac G4 Misadventures - What Now?

    Hi, I have this PowerMac G4, it's a 466MHZ (Mac OS reports 467MHZ) G4. The machine has an ATi Rage Pro 128 with 16MB of RAM, pretty low end even for late 90's and early 2000's standards. I have two graphics cards for AGP. I read up online about if they are supported or not. The process...
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    MP 1,1-5,1 Upgrading GFX Card In Mac Pro 1,1

    Hello all, I recently got a 2006 Mac Pro 1,1 for free and was looking to upgrade it as just a fun project. I have a pair of Xeon X5365 3ghz CPU's on the way and an SSD. Was also planning on doing the unsupported update to OS X 10.10 and will need a new video card for that. I have been perusing...
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    Sapphire Nitro+ Radeon RX 580 4GB - No Boot Screen / Flashing

    Hey folks, i just got a very good deal on a "Sapphire Nitro+ Radeon RX 580 4GB GDDR5". I bought it in order to upgrade my Mac Pro 5.1 (Late 2009) GPU from the old crappy GT120. Unfortunately the card won't show up a boot screen. I've read some posts about the RX 580 Pulse Upgrade and hope that...
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    HELP Please. Macpro 2,1 EL Capitan gpu issues

    Hello, i would greatly appreciate it if anyone can help me with this problem(s) that iam facing with a mac pro 1,1 (upgraded to 2,1). ** Sorry for the long post, but i would greatlt appreciate any feedback. THANKYOU* I received a mac pro 1,1 from a friend a mine with 10.7, nvidia 7300 gt and...
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    Help! Mac pro 1.1 sapphire 5770

    Hello everyone, I have a problem that is driving me crazy! My gt7300 is dead, so I bought a PC sapphire radeon hd 5770 vapor-x 1GB gddr5, I read in several forums, especially in netkas, that video card would work without flashing in my MAC (obviously no image during booting) but never gave video...