Radeon
Radeon is a brand of computer products, including graphics processing units, random-access memory, RAM disk software, and solid-state drives, produced by Radeon Technologies Group, a division of AMD. The brand was launched in 2000 by ATI Technologies, which was acquired by AMD in 2006 for US$5.4 billion.
Radeon Graphics
Radeon Graphics is the successor to the Rage line. Four different families of microarchitectures can be roughly distinguished, the fixed-pipeline family, the unified shader model-families of TeraScale, Graphics Core Next, and RDNA. ATI/AMD have developed different technologies, such as TruForm, HyperMemory, HyperZ, XGP, Eyefinity for multi-monitor setups, PowerPlay for power-saving, CrossFire or Hybrid Graphics. A range of SIP blocks is also to be found on certain models in the Radeon products line: Unified Video Decoder, Video Coding Engine and TrueAudio.The brand was previously only known as "ATI Radeon" until August 2010, when it was renamed to increase AMD's brand awareness on a global scale. Products up to and including the HD 5000 series are branded as ATI Radeon, while the HD 6000 series and beyond use the new AMD Radeon branding.
On 11 September 2015, AMD's GPU business was split into a separate unit known as Radeon Technologies Group, with Raja Koduri as Senior Vice President and chief architect.
Radeon graphics card brands
AMD does not distribute Radeon cards directly to consumers. Instead, it sells Radeon GPUs to third-party manufacturers, who build and sell the Radeon-based video cards to the OEM and retail channels. Manufacturers of the Radeon cards—some of whom also make motherboards—include ASRock, Asus, Biostar, Club 3D, Diamond, Force3D, Gainward, Gigabyte, HIS, PowerColor, Sapphire, VisionTek, and XFX.Graphics processor generations
Early generations were identified with a number and major/minor alphabetic prefix. Later generations were assigned code names. New or heavily redesigned architectures have a prefix of R while slight modifications are indicated by the RV prefix.The first derivative architecture, RV200, did not follow the scheme used by later parts.
Fixed-pipeline family
R100/RV200
The Radeon, first introduced in 2000, was ATI's first graphics processor to be fully DirectX 7 compliant. R100 brought with it large gains in bandwidth and fill-rate efficiency through the new HyperZ technology.The RV200 was a die-shrink of the former R100 with some core logic tweaks for clockspeed, introduced in 2002. The only release in this generation was the Radeon 7500, which introduced little in the way of new features but offered substantial performance improvements over its predecessors.
R200
ATI's second generation Radeon included a sophisticated pixel shader architecture. This chipset implemented Microsoft's pixel shader 1.4 specification for the first time.Its performance relative to competitors was widely perceived as weak, and subsequent revisions of this generation were cancelled to focus on development of the next generation.
R300/R350
The R300 was the first GPU to fully support Microsoft's DirectX 9.0 technology upon its release in 2001. It incorporated fully programmable pixel and vertex shaders.About a year later, the architecture was revised to allow for higher frequencies, more efficient memory access, and several other improvements in the R350 family. A budget line of RV350 products was based on this refreshed design with some elements disabled or removed.
Models using the new PCI Express interface were introduced in 2004. Using 110-nm and 130-nm manufacturing technologies under the X300 and X600 names, respectively, the RV370 and RV380 graphics processors were used extensively by consumer PC manufacturers.
R420
While heavily based upon the previous generation, this line included extensions to the Shader Model 2 feature-set. Shader Model 2b, the specification ATI and Microsoft defined with this generation, offered somewhat more shader program flexibility.R520
ATI's DirectX 9.0c series of graphics cards, with complete shader Model 3.0 support. Launched in October 2005, this series brought a number of enhancements including the floating point render target technology necessary for HDR rendering with anti-aliasing.TeraScale-family
R600
ATI's first series of GPUs to replace the old fixed-pipeline and implement unified shader model. Subsequent revisions tuned the design for higher performance and energy efficiency, resulting in the ATI Mobility Radeon HD series for mobile computers.R700
Based on the R600 architecture. Mostly a bolstered with many more stream processors, with improvements to power consumption and GDDR5 support for the high-end RV770 and RV740 chips. It arrived in late June 2008. The HD 4850 and HD 4870 have 800 stream processors and GDDR3 and GDDR5 memory, respectively. The 4890 was a refresh of 4870 with the same amount of stream processors yet higher clock rates due to refinements. The 4870x2 has 1600 stream processors and GDDR5 memory on an effective 512-bit memory bus with 230.4 Gbit/s video memory bandwidth available.Evergreen
The series was launched on 23 September 2009. It featured a 40 nm fabrication process for the entire product line, with more stream cores and compatibility with the next major version of the DirectX API, DirectX 11, which launched on 22 October 2009 along with Microsoft Windows 7. The Rxxx/RVxxx codename scheme was scrapped entirely. The initial launch consisted of only the 5870 and 5850 models. ATI released beta drivers that introduced full OpenGL 4.0 support on all variants of this series in March 2010.Northern Islands
This is the first series to be marketed solely under the "AMD" brand. It features a 3rd generation 40 nm design, rebalancing the existing architecture with redesigned shaders to give it better performance. It was released first on 22 October 2010, in the form of the 6850 and 6870. 3D output is enabled with HDMI 1.4a and DisplayPort 1.2 outputs.Graphics Core Next-family
Southern Islands
"Southern Islands" was the first series to feature the new compute microarchitecture known as "Graphics Core Next". GCN was used among the higher end cards, while the VLIW5 architecture utilized in the previous generation was used in the lower end, OEM products. However, the Radeon HD 7790 uses GCN 2, and was the first product in the series to be released by AMD on 9 January 2012.Sea Islands
The "Sea Islands" were OEM rebadges of the 7000 series, with only three products, code named Oland, available for general retail. The series, just like the "Southern Islands", used a mixture of VLIW5 models and GCN models for its desktop products.Volcanic Islands
"Volcanic Islands" GPUs were introduced with the AMD Radeon RX 200 series, and were first released in late 2013. The Radeon RX 200 line is mainly based on AMD's GCN architecture, with the lower end, OEM cards still using VLIW5. The majority of desktop products use GCN 1, while the R9 290x/290 & R7 260X/260 use GCN 2, and with only the R9 285 using the new GCN 3.Caribbean Islands
GPUs codenamed "Caribbean Islands" were introduced with the AMD Radeon RX 300 series, released in 2015. This series was the first to solely use GCN based models, ranging from GCN 1st to GCN 3rd Gen, including the GCN 3-based Fiji-architecture models named Fury X, Fury, Nano and the Radeon Pro Duo.Arctic Islands
GPUs codenamed "Arctic Islands" were first introduced with the Radeon RX 400 series in June 2016 with the announcement of the RX 480. These cards were the first to use the new Polaris chips which implements GCN 4th Gen on the 14 nm fab process. The RX 500 series released in April 2017 also uses Polaris chips.Vega
RDNA-family
RDNA 1
On 27 May 2019, at COMPUTEX 2019, AMD announced the new 'RDNA' graphics micro-architecture, which succeeded the Graphics Core Next micro-architecture. This is the basis for the Radeon RX 5700-series graphics cards, the first to be built under the codename 'Navi'. These cards feature GDDR6 SGRAM and support for PCI Express 4.0.RDNA 2
On 5 March 2020, AMD publicly announced its plan to release a "refresh" of the RDNA micro-architecture. Dubbed as the RDNA 2 architecture, it was stated to succeed the first-gen RDNA micro-architecture and was initially scheduled for a release in Q4 2020. RDNA 2 was confirmed as the graphics microarchitecture featured in the Xbox Series X and Series S consoles from Microsoft, and PlayStation 5 from Sony, with proprietary tweaks and different GPU configurations in each systems' implementation.AMD unveiled the Radeon RX 6000 series, its next-gen RDNA 2 graphics cards at an online event on 28 October 2020. The lineup consists of the RX 6800, RX 6800 XT and RX 6900 XT. The RX 6800 and 6800 XT launched on 18 November 2020, with the RX 6900 XT being released on 8 December 2020. Further variants including a Radeon RX 6700 series based on Navi 22, launched on 18 March 2021, a Radeon RX 6600 series based on Navi 23, launched on 11 August 2021, and a Radeon RX 6500, launched on 19 January 2022.