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All standard HD resolutions share a 16∶9 aspect ratio, although some derived resolutions with smaller or larger ratios also exist, e.g. 4∶3 and 64∶27, respectively. Most of the narrower resolutions are only used for storing, not for displaying videos, while the wider resolutions are often available as physical displays.
The Radeon HD 5900 series utilizes two Cypress graphics processors and a third-party PCI-E bridge. Similar to Radeon HD 4800 X2 series graphics cards; however, AMD has abandoned the use of X2 moniker for dual-GPU variants starting with Radeon HD 5900 series, making it the only series within the Evergreen GPU family to have two GPUs on one PCB.
The extra pixels are used to form the increased area to the sides of the D1 image. The pixel density of 960H is identical to standard D1 resolution so it does not give any improvement in image quality, merely a wider aspect ratio. Alternative analog video transport technologies carrying higher resolutions than 960H include HD-TVI, HDCVI, and AHD.
The Radeon HD 2600 series was based on the codenamed RV630 GPU and packed 390 million transistors on a 65 nm fabrication process. The Radeon HD 2600-series video cards included GDDR3 support, a 128-bit memory ring bus and 4-phase digital PWM, [9] spanning a die size of 153 mm 2. [15]
The Radeon HD 7000 series, codenamed "Southern Islands", is a family of GPUs developed by AMD, [9] and manufactured on TSMC's 28 nm process. [ 10 ] The primary competitor of Southern Islands was Nvidia 's GeForce 600 series (also manufactured at TSMC), which shipped during Q1 2012, largely due to the immaturity of the 28 nm process.
Starting with the Catalyst 8.3 drivers, Amd/Ati officially supports CrossFireX technology for the 3800 series, which means that up to four GPUs can be used in a pair of Radeon HD 3870 X2. [7] AMD stated the possibility of supporting 4 Radeon HD 3870 X2 cards, allowing 8 GPUs to be used on several motherboards, including the MSI K9A2 Platinum ...
In the HD 6000-series cards, AMD's Universal Video Decoder was upgraded to version 3.0 which supported Blu-ray 3D codecs, hardware decoding for DivX / XviD and a list of other improvements. The HD 6750 and HD 6770 adds the MVC decode capability of UVD 3.0, but not the rest of the UVD 3.0 features. [8]
The Radeon HD 8000 series is a family of computer GPUs developed by AMD. AMD was initially rumored to release the family in the second quarter of 2013, [ 9 ] [ 10 ] [ 11 ] with the cards manufactured on a 28 nm process and making use of the improved Graphics Core Next architecture. [ 12 ]