Radeon HD 7000 Series

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AMD Radeon HD 7000 Series
AMD Radeon graphics logo
Release date Announced: December 22, 2011
Released: January 9, 2012
Codename Southern Islands
London
Trinity
Sea Islands
Fabrication process and transistors
  • 292M 40 nm (Cedar)
  • 370M 40 nm (Caicos)
  • 716M 40 nm (Turks)
  • 1,500M 28 nm (Cape Verde)
  • 2,080M 28 nm (Bonaire)
  • 2,800M 28 nm (Pitcairn)
  • 4,313M 28 nm (Tahiti)
Cards
Entry-level 73xx - 76xx
Enthusiast 7950, 7970, 7990
Rendering support
Direct3D Direct3D 11.2
Shader Model 5.0
OpenCL OpenCL 1.2
OpenGL OpenGL 4.3
History
Predecessor Radeon HD 6000 Series
Variant Radeon HD 8000 Series
Successor Radeon Rx 200 Series

The Radeon HD 7000 Series, based on Graphics Core Next 1.0 "Southern Islands", is further products series in the family of Radeon GPUs developed by AMD.[1] AMD builds Southern Islands series graphics chips based on the 28 nm manufacturing process at TSMC.[2] The primary competitor of Southern Islands, Nvidia's GeForce 600 Series (also manufactured at TSMC), also shipped during Q1 2012, largely due to the immaturity of the 28 nm process.[3]

Architecture[edit]

This article is about all products under the Radeon HD 7000 Series brand. Graphics Core Next was introduces with the Radeon HD 7000 Series.

Multi-monitor support[edit]

Main article: AMD Eyefinity

The AMD Eyefinity-branded on-die display controllers were introduced in September 2009 in the Radeon HD 5000 Series and have been present in all products since.[4]

Video acceleration[edit]

Both Unified Video Decoder (UVD) and Video Codec Engine (VCE) are present on the dies of all products and supported by AMD Catalyst and by the free and open-source graphics device driver#ATI/AMD.

Desktop products[edit]

The 28 nm product line is divided in three dies (Tahiti, Pitcairn, and Cape Verde), each one roughly double in shader units compared to its small brethren (32, 20, and respectively 10 GCN compute units). While this gives roughly a doubling of single-precision floating point, there is however a significant departure in double-precision compute power. Tahiti has a maximum ¼ double precision throughput relative to its single precision throughput, while the other two smaller consumer dies can only achieve a 1/16 ratio.[5] While each bigger die has two additional memory controllers widening its bus by 128 bits, Pitcairn however has the same front-end dual tesselator units as Tahiti giving it similar performance to its larger brethren in DX11 tessellation benchmarks.[5]

Radeon HD 7900[edit]

Codenamed Tahiti, the Radeon HD 7900 series was announced on December 22, 2011. Products include the Radeon 7970 GHz Edition, Radeon HD 7970 and Radeon HD 7950. The Radeon HD 7970 features 2048 usable stream cores, whereas the Radeon HD 7950 has 1792 usable stream cores, as 256 out of the 2048 cores are disabled during product binning which detects defective areas of a chip. The cards are the first products to take advantage of AMD's new "Graphics Core Next" compute architecture. Both cards are equipped with 3 GB GDDR5 memory and manufactured on TSMC's 28 nm process. The Tahiti GPU is also used in the Radeon HD 7870 XT, released November 19, 2012. In this case one quarter of the stream processors are disabled, giving 1536 usable cores. Additionally, the memory interface is downgraded from 384-bit to 256-bit, along with a memory size reduction from 3 GB to 2 GB.

Radeon HD 7800[edit]

Codenamed Pitcairn, the Radeon HD 7800 series was formally unveiled on March 5, 2012, with retail availability from March 19, 2012. Products include the Radeon HD 7870 and Radeon HD 7850. The Radeon HD 7870 features 1280 usable stream cores, whereas the Radeon HD 7850 has 1024 usable stream cores. Both cards are equipped with 2 GB GDDR5 memory and manufactured on TSMC's 28 nm process.[6]

Radeon HD 7700[edit]

Codenamed Cape Verde, the Radeon HD 7700 series was released on February 15, 2012. Products include the Radeon HD 7770 GHz Edition and Radeon HD 7750. The Radeon HD 7770 GHz Edition features 640 stream cores based on the GCN architecture, whereas the Radeon HD 7750 has only 512 usable stream cores. Both cards are equipped with 1 GB GDDR5 memory and manufactured in 28 nm. On March 22, 2013 another card, Radeon HD 7790, was introduced in this series. This card is based on the Bonaire architecture, featuring 896 stream cores based on GCN 1.1 technology, an incremental update of GCN. On May 2013, AMD launched new graphic card HD 7730, based on Cape Verde LE variant which only 384 stream cores enabled. this card either came with 1 GB GDDR5 or 2 GB GDDR3 memory.

Mobile products[edit]

Integrated (IGP) products[edit]

Trinity APU Series (HD 7xxxD)[edit]

Model Released Code name Fab (nm) Core Clock (MHz) Config core1 Fillrate Shared Memory GFLOPS Combined TDP2 (W) GFLOPS/W Notes
Pixel (GP/s) Texture (GT/s) Bandwidth (GB/s) Bus type Bus width (bit) Idle Max.
Radeon HD 7480D June 1, 2012 Devastator 32 723 128:8:4  ?  ? 25.6 DDR3-1600 128 185 Unknown 65 Unknown used in A4-5300 APU
Radeon HD 7540D June 1, 2012 Devastator 760 192:12:4  ?  ? 29.9 DDR3-1866 128 292 Unknown 65 Unknown used in A6-5400K APU
Radeon HD 7560D June 1, 2012 Devastator 760 256:16:4  ?  ? 29.9 DDR3-1866 128 389 Unknown 65-100 Unknown used in A8-5500 and A8-5600K APUs
Radeon HD 7660D June 1, 2012 Devastator 760-800 384:24:8 2.7 16.2 29.9 DDR3-1866 128 584-614 Unknown 65-100 Unknown used in A10-5700 (760 MHz) and A10-5800K (800 MHz) APUs
Model Launch Code name Fab
(nm)
Clock rate (MHz) Config core1 Fillrate Shared memory GFLOPS (Single-precision)
Core (Base) Core (Boost) Pixel (GP/s) Texture (GT/s) Bandwidth (GB/s) Bus type2 Bus width (bit)
Radeon HD 7400G September 1, 2012 - 32 327 424 192:12:4 1.31 3.92 21.33 to 34.13 DDR3-1333 to 2133 128 125.57
Radeon HD 7420G June 1, 2012 Scrapper 480 655 128:8:4 1.92 3.84 122.88
Radeon HD 7500G May 15, 2012 - 327 424 256:16:8 2.62 5.23 167.42
Radeon HD 7520G June 1, 2012 Scrapper 496 685 192:12:4 1.98 5.95 190.46
Radeon HD 7600G September 1, 2012 - 320 424 384:24:8 2.56 7.68 245.76
Radeon HD 7620G May 15, 2012 - 360 497 384:24:8 2.88 8.64 276.48
Radeon HD 7640G May 15, 2012 Devastator 496 685 256:16:8 3.97 7.94 253.95
Radeon HD 7660G May 15, 2012 Devastator 496 685 384:24:8 3.97 11.9 380.93

TDP specified for AMD reference designs, includes CPU power consumption. Actual TDP of retail products may vary.

Graphics device drivers[edit]

AMD's proprietary graphics device driver "Catalyst"[edit]

Main article: AMD Catalyst

AMD Catalyst is being developed for Microsoft Windows and Linux. As of July 2014, other operating system are not officially supported. This may be different for the AMD FirePro brand, which is based on identical hardware but features OpenGL-certified graphics device drivers.

AMD Catalyst supports of course all features advertised for the Radeon brand.

Free and open-source graphics device driver "Radeon"[edit]

The free and open-source drivers are primarily developed on Linux and for Linux, but have been ported to other operating systems as well. Each driver is composed out of five parts:

  1. Linux kernel component DRM
  2. Linux kernel component KMS driver: basically the device driver for the display controller
  3. user-space component libDRM
  4. user-space component in Mesa 3D;
  5. a special and distinct 2D graphics device driver for X.Org Server, which if finally about to be replaced by Glamor

The free and open-source "Radeon" graphics driver supports most of the features implemented into the Radeon line of GPUs.[8]

The free and open-source "Radeon" graphics device drivers are not reverse engineered, but based on documentation released by AMD.[9]

See also[edit]

References[edit]

  1. ^ Demerjian, Charlie (April 6, 2011). "AMD will out the 'Southern Islands' GPU architecture early". SemiAccurate. Archived from the original on October 1, 2013. Retrieved October 1, 2013. 
  2. ^ "Report: TSMC wins key 40-, 28-nm deals". EETimes. Archived from the original on June 28, 2011. Retrieved 2011-06-28. 
  3. ^ Charlie Demerjian (July 19, 2011). "Southern Islands, Kepler, and Apple’s A6 process puzzle outed". Retrieved December 1, 2013. 
  4. ^ "AMD Eyefinity: FAQ". AMD. 2011-05-17. Retrieved 2014-07-02. 
  5. ^ a b "Review: AMD Radeon HD 7850 & 7870" (in French). BeHardware. March 5, 2012. Retrieved August 22, 2013. 
  6. ^ "AMD Radeon HD 7870 GHz Edition & Radeon HD 7850 Review: Rounding Out Southern Islands". AnandTech. Retrieved August 22, 2013. 
  7. ^ "Berechnungen mit doppelter Genauigkeit auf GPU-Teil von Trinity möglich". Planet3dnow.de. August 13, 2013. Retrieved August 22, 2013. 
  8. ^ "RadeonFeature". Xorg.freedesktop.org. Retrieved 2014-07-06. 
  9. ^ "AMD Developer Guideds". 

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External links[edit]