ATI Radeon HD 4870

The ATI Radeon HD 4870 was a high-end graphics card marketed by Advanced Micro Devices (AMD) and released by Apple on March 3, 2009 as a build-to-order option for the 2009 1st-generation Mac Pro. It is based on a GPU chipset originally developed by ATI Technologies (which was acquired by AMD).About graphics-card compatibility between Mac Pro models, Apple Support. 2022-03-14. It became available for pre-order separately on March 5 and shipped in May 2009, when Mac OS X 10.5.7 became available.ATI Radeon HD 4870 Graphics Upgrade for Mac Pro now priced by Scott McNulty, Macworld. 2009-03-05.
==Description==
The Radeon HD 4870 is based on ATI's high-end RV770 XT workstation graphics chip that was fabricated by TSMC on the 55 nm process. The GPU clock speed was 750 MHz, which could be boosted to 900 MHz, producing up to 1.2 teraflops. It contained 512 MB of GDDR5 video RAM. The card features one dual-link DVI port and a Mini DisplayPort. It took up the space of a double-wide PCIe 2.0 x16 slot, and required two auxiliary power cables.ATI Radeon HD 4870, TechPowerUp GPU Database. Accessed 2022-05-09.
===Support===
The Radeon HD 4870 required a minimum of Mac OS X 10.5.6 (Leopard), which was pre-installed on the 2009 Mac Pro. Mac OS X 10.5.7 added backward compatibility with the 2008 models, and Mac OS X 10.6 added support for all older 1st-generation Mac Pros. Some Mac Pros running Mac OS X 10.6.4 required a Snow Leopard Graphics Update for improved stability, which was incorporated into Mac OS X 10.6.5 and later.Snow Leopard Graphics Update, Ars Technica. 2010-08-10.Snow Leopard Graphics Update, Apple Support. 2010-08-16. Archived 2010-08-19.About the Mac OS X v10.6.5 Update, Apple Support. 2010-11-10. Archived 2010-11-14. The card was supported through macOS 10.13.6 (High Sierra). However, it does not support Metal, and as a result will not work with macOS Mojave (10.14) or later.Install macOS 10.14 Mojave on Mac Pro (Mid 2010) and Mac Pro (Mid 2012), Apple Support. 2019-12-03.
==References==
==External links==
*ATI Radeon HD 4870 Graphics Upgrade Kit for Mac Pro (Early 2009 or Early 2008) at Apple (archived 2010-08-10, 2009-03-07)
* at Wikipedia
Category:AMD products
Category:2008 introductions