XFX Double D HD 6790

HD-679X-ZDFC

Graphics Processor

Barts

Cores

800

TMUs

ROPs

Memory Size

1024 MB

Memory Type

GDDR5

Bus Width

256 bit

GPU

Graphics Processor

GPU Name: Barts

GPU Variant: Barts LE
(215-0798002)

Architecture: TeraScale 2

Foundry: TSMC

Process Size: 40 nm

Transistors: 1,700 million

Density: 6.7M / mm²

Die Size: 255 mm²

Chip Package: HFCBGA-1737

Graphics Card

Release Date: Apr 4th, 2011

Generation: Northern Islands
(HD 6700)

Predecessor: Evergreen

Successor: Southern Islands

Production: End-of-life

Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 840 MHz

Memory Clock: 1050 MHz
4.2 Gbps effective

Memory

Memory Size: 1024 MB

Memory Type: GDDR5

Memory Bus: 256 bit

Bandwidth: 134.4 GB/s

Render Config

Shading Units: 800

TMUs: 40

ROPs: 16

Compute Units: 10

L1 Cache: 8 KB (per CU)

L2 Cache: 512 KB

Theoretical Performance

Pixel Rate: 13.44 GPixel/s

Texture Rate: 33.60 GTexel/s

FP32 (float): 1,344 GFLOPS

Board Design

Slot Width: Dual-slot

Length: ~~198 mm~~
262 mm
~~7.8 inches~~
10.3 inches

TDP: 150 W

Suggested PSU: 450 W

Outputs: 2x DVI
1x HDMI 1.3a
1x DisplayPort 1.1
2x DVI
1x HDMI 1.3a
2x mini-DisplayPort 1.1

Power Connectors: 2x 6-pin

Board Number: C220,
109-C22237-00

Graphics Features

DirectX: 11.2 (11_0)

OpenGL: 4.4

OpenCL: 1.2

Vulkan: N/A

Shader Model: 5.0

Barts GPU Notes

Generation: Northern Islands
Mobile Variant: Blackcomb
Codename: Victoria
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Other retail boards based on this design (9)

Name	GPU Clock	Memory Clock	Other Changes
HIS HD 6790 Fan	840 MHz	1050 MHz	230 mm/9.1 inches
HIS HD 6790 IceQ X	840 MHz	1050 MHz	235 mm/9.3 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
HIS HD 6790 IceQ X Turbo	900 MHz	1100 MHz	235 mm/9.3 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
MSI HD 6790 OC	920 MHz	1050 MHz	231 mm/9.1 inches
Sapphire HD 6790	840 MHz	1050 MHz	241 mm/9.5 inches
Sapphire HD 6790	840 MHz	1050 MHz	250 mm/9.8 inches, 1x DVI 1x HDMI 1x DisplayPort
XFX Double D HD 6790	840 MHz	1050 MHz	262 mm/10.3 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
XFX HD 6790	840 MHz	1050 MHz	235 mm/9.3 inches, 2x DVI 1x HDMI 2x mini-DisplayPort
XFX HD 6790	840 MHz	1050 MHz	220 mm/8.7 inches, 2x DVI 1x HDMI 2x mini-DisplayPort