![Amazon.com: Epic IT Service - AMD Radeon HD 5770 1GB GDDR5 Mac Edition, for Mac Pro 1,1 to 5,1 Models, macOS up to High Sierra (Attn: Legacy Model) : Electronics Amazon.com: Epic IT Service - AMD Radeon HD 5770 1GB GDDR5 Mac Edition, for Mac Pro 1,1 to 5,1 Models, macOS up to High Sierra (Attn: Legacy Model) : Electronics](https://m.media-amazon.com/images/I/61vwqst6ccL.jpg)
Amazon.com: Epic IT Service - AMD Radeon HD 5770 1GB GDDR5 Mac Edition, for Mac Pro 1,1 to 5,1 Models, macOS up to High Sierra (Attn: Legacy Model) : Electronics
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HIS HD 5770 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards
![i got an ATI Radeon HD 5770 Mac edition and it says it has 1gb vram on techpowerup but on generic PnP monitor it says it has 768 mb of vram als i got an ATI Radeon HD 5770 Mac edition and it says it has 1gb vram on techpowerup but on generic PnP monitor it says it has 768 mb of vram als](https://i.redd.it/i-got-an-ati-radeon-hd-5770-mac-edition-and-it-says-it-has-v0-7jv4kp0visx91.png?width=404&format=png&auto=webp&s=30a268c5464a81c408e3ab3284271a7eea4c6c1b)
i got an ATI Radeon HD 5770 Mac edition and it says it has 1gb vram on techpowerup but on generic PnP monitor it says it has 768 mb of vram als
![HIS HD 5770 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards HIS HD 5770 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards](http://www.hisdigital.com/UserFiles/product/H577F1GD-1600-4.jpg)
HIS HD 5770 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards
![HIS HD 5770 IceQ 5 Turbo 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) (DiRT 2™ Game Coupon Inside) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards HIS HD 5770 IceQ 5 Turbo 1GB (128bit) GDDR5 PCIe (DirectX 11/ Eyefinity) (DiRT 2™ Game Coupon Inside) < HD 5700 Series < Desktop Graphics < Products | HIS Graphic Cards](http://www.hisdigital.com/UserFiles/product/H577Q1GD-4-1600.jpg)