Report an Error

AMD Radeon HD 6990

Graphics Processor
1536 x2
96 x2
32 x2
2048 MB x2
Memory Size
Memory Type
256 bit x2
Bus Width
AMD Radeon HD 6990 Image AMD Antilles Image
The Radeon HD 6990 was a high-end graphics card by AMD, launched in March 2011. Built on the 40 nm process, and based on the Antilles graphics processor, in its Antilles XT variant, the card supports DirectX 11.0. The Antilles graphics processor is a large chip with a die area of 389 mm² and 2,640 million transistors. Radeon HD 6990 combines two graphics processors to increase performance. It features 1536 shading units, 96 texture mapping units and 32 ROPs per GPU. AMD has placed 4,096 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 2,048 MB). The GPU is operating at a frequency of 830 MHz, memory is running at 1250 MHz.
We recommend the AMD Radeon HD 6990 for gaming with highest details at resolutions up to, and including, 2560x1600.
Being a dual-slot card, the AMD Radeon HD 6990 draws power from 2x 8-pin power connectors, with power draw rated at 375 W maximum. Display outputs include: 1x DVI, 4x mini-DisplayPort. Radeon HD 6990 is connected to the rest of the system using a PCIe 2.0 x16 interface. The card measures 295 mm in length, and features a dual-slot cooling solution. Its price at launch was 699 US Dollars.

Graphics Processor

GPU Name: Antilles
GPU Variant: Antilles XT
Architecture: TeraScale 3
Process Size: 40 nm
Transistors: 2,640 million
Die Size: 389 mm²

Graphics Card

Released: Mar 8th, 2011
Production Status: End-of-life
Launch Price: 699 USD
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 830 MHz
Memory Clock: 1250 MHz
5000 MHz effective


Memory Size: 2048 MB x2
Memory Type: GDDR5
Memory Bus: 256 bit x2
Bandwidth: 160.0 GB/s x2

Render Config

Shading Units: 1536 x2
TMUs: 96 x2
ROPs: 32 x2
Compute Units: 24 x2
Pixel Rate: 26.56 GPixel/s x2
Texture Rate: 79.7 GTexel/s x2
Floating-point performance: 2,549.8 GFLOPS x2

Board Design

Slot Width: Dual-slot
Length: 11.61 inches
295 mm
TDP: 375 W
Outputs: 1x DVI
4x mini-DisplayPort
Power Connectors: 2x 8-pin
Board Number: C206

Graphics Features

DirectX: 11.0
OpenGL: 4.2
OpenCL: 1.1
Shader Model: 5.0


Find graphics card BIOS for this card.

GPU-Z Validation

Find GPU-Z validations for this card.


Our review database contains 47 reviews of the Radeon HD 6990.

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
ASUS HD 6990 830 MHz 1250 MHz 11.6 inches
Club 3D HD 6990 830 MHz 1250 MHz 11.6 inches
Diamond HD 6990 830 MHz 1250 MHz 11.6 inches
GIGABYTE HD 6990 830 MHz 1250 MHz 11.6 inches
HIS HD 6990 830 MHz 1250 MHz 11.6 inches
MSI HD 6990 830 MHz 1250 MHz
PowerColor HD 6990 830 MHz 1250 MHz 11.6 inches
PowerColor HD 6990 LCS 880 MHz 1250 MHz 12 inches, Single-slot
Sapphire HD 6990 830 MHz 1250 MHz 11.6 inches
VTX3D HD 6990 830 MHz 1250 MHz 11.6 inches
XFX HD 6990 830 MHz 1250 MHz 11.6 inches