AMD Barts

Barts

Barts XT

Shane Phillips

Die Shot

Block Diagram

Information

Information 2

AMD's Barts GPU uses the TeraScale 2 architecture and is made using a 40 nm production process at TSMC. With a die size of 255 mm² and a transistor count of 1,700 million it is a medium-sized chip. Barts supports DirectX 11.2 (Feature Level 11_0). For GPU compute applications, OpenCL version 1.2 can be used. It features 1120 shading units, 56 texture mapping units and 32 ROPs.

Further reading: TeraScale 2 Instruction Set Architecture

Graphics Processor

Released: Oct 21st, 2010

GPU Name: Barts

Mobile Variant: Blackcomb

Codename: Victoria

Generation: Northern Islands

Architecture: TeraScale 2

Foundry: TSMC

Process Size: 40 nm

Transistors: 1,700 million

Density: 6.7M / mm²

Die Size: 255 mm²

Package: HFCBGA-1737

Graphics Features

DirectX: 11.2 (11_0)

OpenGL: 4.4

OpenCL: 1.2

Vulkan: N/A

Shader Model: 5.0

WDDM: 1.3

Compute: GFX4

DCE: 5.0

UVD: 3.1

Render Config

Shading Units: 1120

TMUs: 56

ROPs: 32

Compute Units: 14

Z-Stencil: 40

L1 Cache: 8 KB per CU

L2 Cache: 512 KB

Max. TDP: 300 W

All TeraScale 2 GPUs

AMD GPU Architecture History

2023 CDNA 3.0
2022-2024 RDNA 3.0
2021 CDNA 2.0
2020 CDNA 1.0
2020-2023 RDNA 2.0
2019-2020 RDNA 1.0
2018-2022 GCN 5.1
2017-2020 GCN 5.0
2016-2020 GCN 4.0
2014-2019 GCN 3.0
2013-2017 GCN 2.0
2011-2020 GCN 1.0
2010-2013 TeraScale 3
2009-2015 TeraScale 2
2005-2013 TeraScale
2005-2007 Ultra-Threaded SE

Graphics cards using the AMD Barts GPU

Name	Chip	Memory	Shaders	TMUs	ROPs	GPU Clock	Memory Clock
AMD Radeon HD 6850	Barts PRO	1024 MB	960	48	32	775 MHz	1000 MHz
AMD Radeon HD 6870	Barts XT	1024 MB	1120	56	32	900 MHz	1050 MHz
AMD Radeon HD 6790	Barts LE	1024 MB	800	40	16	840 MHz	1050 MHz
AMD Radeon HD 6870 X2	Barts XT	1024 MB	1120	56	32	900 MHz	1050 MHz
AMD Radeon HD 6850 X2	Barts PRO	2 GB	960	48	32	800 MHz	1050 MHz
AMD Radeon HD 7720 OEM	Barts LE	1024 MB	800	40	32	840 MHz	1050 MHz