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AMD Radeon HD 6870 X2

AMD Radeon HD 6870 X2 Image AMD Barts Image
The Radeon HD 6870 X2 was a high-end graphics card by AMD, launched in July 2011. Built on the 40 nm process, and based on the Barts graphics processor, in its Barts XT variant, the card supports DirectX 11.0. The Barts graphics processor is an average sized chip with a die area of 255 mm² and 1,700 million transistors. Radeon HD 6870 X2 combines two graphics processors to increase performance. It features 1120 shading units, 56 texture mapping units and 32 ROPs per GPU. AMD has placed 2,048 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 1,024 MB). The GPU is operating at a frequency of 900 MHz, memory is running at 1050 MHz.
We recommend the AMD Radeon HD 6870 X2 for gaming with highest details at resolutions up to, and including, 5760x1080.
Being a dual-slot card, its power draw is rated at 300 W maximum. Display outputs include: 2x DVI, 1x HDMI, 2x mini-DisplayPort. Radeon HD 6870 X2 is connected to the rest of the system using a PCIe 2.0 x16 interface. The card measures 304 mm in length, and features a dual-slot cooling solution. Its price at launch was 520 US Dollars.

Graphics Processor

GPU Name: Barts
GPU Variant: Barts XT
Architecture: TeraScale 2
Process Size: 40 nm
Transistors: 1,700 million
Die Size: 255 mm²

Graphics Card

Released: Jul 8th, 2011
Production Status: End-of-life
Launch Price: 520 USD
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 900 MHz
Memory Clock: 1050 MHz
4200 MHz effective


Memory Size: 1024 MB x2
Memory Type: GDDR5
Memory Bus: 256 bit x2
Bandwidth: 134.4 GB/s x2

Render Config

Shading Units: 1120 x2
TMUs: 56 x2
ROPs: 32 x2
Compute Units: 14 x2
Pixel Rate: 28.80 GPixel/s x2
Texture Rate: 50.4 GTexel/s x2
Floating-point performance: 2,016.0 GFLOPS x2

Board Design

Slot Width: Dual-slot
Length: 11.97 inches
304 mm
TDP: 300 W
Outputs: 2x DVI
2x mini-DisplayPort

Graphics Features

DirectX: 11.0
OpenGL: 4.3
OpenCL: 1.2
Shader Model: 5.0


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Our review database contains 170 reviews of the Radeon HD 6870 X2.

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
Club 3D HD 6870 X2 900 MHz 1050 MHz
PowerColor HD 6870 X2 900 MHz 1050 MHz
VTX3D HD 6870 X2 900 MHz 1050 MHz