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AMD Eyefinity is the brand name for AMD products which support multi-monitor setups by integrating multiple (up to six) display controllers on one GPU. AMD Eyefinity was introduced with the Radeon HD 5000 Series "Evergreen" in September 2009 and has been available on APUs and professional-grade graphics cards branded AMD FirePro as well. AMD Eyefinity supports a maximum of 2 non-DisplayPort displays (e.g. HDMI, DVI, VGA, DMS-59, VHDCI) (which AMD calls "legacy output") and up to 6 DisplayPort displays simultaneously using a single graphics card or APU. To feed more than two displays, the additional panels must have native DisplayPort support.〔(【引用サイトリンク】 title=How do I connect three or More Monitors to an AMD Radeon™ HD 5000, HD 6000, and HD 7000 Series Graphics Card? )〕 Alternatively active DisplayPort-to-DVI/HDMI/VGA adapters can be employed.〔(【引用サイトリンク】title=Radeon feature matrix )〕 The setup of large video walls by connecting multiple computers over Gigabit Ethernet or Ethernet is also supported.〔(【引用サイトリンク】title=Configuring and Running a Large Video Wall using ATI FirePro Graphics )〕 The version of AMD Eyefinity (aka DCE, display controller engine) introduced with Excavator-based Carrizo APUs features a Video underlay pipe. == Overview== AMD Eyefinity is implemented by multiple on-die display controllers. The 5000-series designs host two internal clocks and one external clock. Displays connected over VGA, DVI, or HDMI each require their own internal clock. But all displays connected over DisplayPort can be driven from only one external clock. This external clock is what allows Eyefinity to fuel up to six monitors from a single card. The entire HD 5000 series products have Eyefinity capabilities supporting three outputs. The ''Radeon HD 5870 Eyefinity Edition'', however, supports six mini DisplayPort outputs, all of which can be simultaneously active. The display controller has two RAMDACs which are used to drive the VGA or the DVI ports in analog mode (for example, when a DVI-to-VGA converter is attached to a DVI port), a maximum of six digital transmitters that can output either a DisplayPort signal or a TMDS signal which is used for either DVI or HDMI, and two clock signal generators needed to drive the digital outputs in TMDS mode. Dual-link DVI displays use two of the TMDS/DisplayPort transmitters and one clock signal each. Single-link DVI displays and HDMI displays use one TMDS/DisplayPort transmitter and one clock signal each. DisplayPort displays use one TMDS/DisplayPort transmitter and no clock signal. An active DisplayPort adapter can be used to convert a DisplayPort signal to another type of signal like VGA, single-link DVI or dual-link DVI, or HDMI if more than two non-DisplayPort displays need to be connected to a Radeon HD 5000 series graphics card.〔 DisplayPort 1.2 added the possibility to drive multiple displays on single DisplayPort connector, called Multi-Stream Transport (MST). AMD graphics solutions equipped with DisplayPort 1.2 outputs can run multiple monitors from a single port. At High-Performance Graphics 2010 Mark Fowler presented the Evergreen and stated that e.g. 5870 (Cypress), 5770 (Juniper) and 5670 (Redwood) support max resolution of the 6 times 2560×1600 pixels, while the 5470 (Cedar) supports 4 times 2560×1600 pixels. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「AMD Eyefinity」の詳細全文を読む スポンサード リンク
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