What does ATI Radeon HD 5870 mean?

ATI Radeon HD 5870 meaning in Urban Dictionary

An ATI graphics card which was introduced towards the public in 2009.It at this time works for approximately $149 online.inside Apple Store it is $299.In the Apple Store it had been circulated in Late 2012.To a Mac-Pro owner, they believe Apple is satisfying all of them with state of this line 1 GB DDR5 that does not do even close to a workstation photos card, but they never do their analysis.