radeon 5770

Hi, I just bought a Mac Pro 5.1. Single Processor Xeon 2.8 Ghz and ATI Radeon HD 5770. The computer came with Snow Leopard installed so my next step was to begin the upgrade process to at least High Sierra until I buy a Metal compatible GPU. The problem I came up with was that I foolishly...

Having all sorts of fun today. :P Just got a cheap used Radeon HD 5770 via eBay. Although the listing does not specify it as such, it appears to be the Mac version, with the extra "handle"/brace off the end and an Apple-specific part # (639-0675) on it. However, when I boot up the machine...

I have two GPUs for my early 2008 mac pro (2x 3.2ghz Xeon, 16GB OWC Ram), the first is an EVGA GTX 285 flashed with the mac efi and the second is an Apple radeon 5770. The system runs OS X 10.11.6 just fine. The strange thing is that in most games on OS X the 5770 outperforms the 285 by a...

I have a Mac Pro 2.8 mid-2010/Nehalam with a Radeon HD 5770 video card in it (the stock video card for this model) and I’m trying to run two Dell 30-inch U3014 monitors with it. This card should easily be able to run the two 30-inch monitors at 2560 X 1600. In fact, I had these two 30-inch...