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NVIDIA GeForce 6800 GT Dual

NV40 A1 x2
Graphics Processor
16 x2
Pixel Shaders
6 x2
Vertex Shaders
16 x2
TMUs
16 x2
ROPs
256 MB x2
Memory Size
GDDR3
Memory Type
256 bit x2
Bus Width
NVIDIA GeForce 6800 GT Dual Photo NVIDIA NV40 A1 Photo
The GeForce 6800 GT Dual was a graphics card by NVIDIA, launched in June 2004. Built on the 130 nm process, and based on the NV40 A1 graphics processor, the card supports DirectX 9.0c. The NV40 A1 graphics processor is an average sized chip with a die area of 287 mm² and 222 million transistors. GeForce 6800 GT Dual combines two graphics processors to increase performance. It features 16 pixel shaders and 6 vertex shaders, 16 texture mapping units and 16 ROPs per GPU. Due to the lack of unified shaders you will not be able to run recent games at all (which require unified shader/DX10+ support). NVIDIA has placed 512 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 256 MB). The GPU is operating at a frequency of 350 MHz, memory is running at 500 MHz.
Being a dual-slot card, the NVIDIA GeForce 6800 GT Dual draws power from 1x 6-pin power connectors, with power draw not exactly known. Display outputs include: 2x DVI, 1x S-Video. GeForce 6800 GT Dual is connected to the rest of the system using a PCI-Express 1.0 x16 interface.

Graphics Processor

GPU Name
NV40 A1
Architecture
Curie
Foundry
TSMC
Process Size
130 nm
Transistors
222 million
Die Size
287 mm²

Graphics Card

Release Date
Jun 8th, 2004
Generation
GeForce 6 PCIe
(6800)
Production
End-of-life
Bus Interface
PCIe 1.0 x16

Clock Speeds

GPU Clock
350 MHz
Memory Clock
500 MHz
1000 MHz effective

Memory

Memory Size
256 MB
Memory Type
GDDR3
Memory Bus
256 bit
Bandwidth
32.00 GB/s

Render Config

Pixel Shaders
16
Vertex Shaders
6
TMUs
16
ROPs
16

Theoretical Performance

Pixel Rate
5.600 GPixel/s
Vertex Rate
525.0 MVertices/s
Texture Rate
5.600 GTexel/s

Board Design

Slot Width
Dual-slot
TDP
unknown
Outputs
2x DVI
1x S-Video
Power Connectors
1x 6-pin

Graphics Features

DirectX
9.0c
OpenGL
2.1
OpenCL
N/A
Vulkan
N/A
Shader Model
3.0

NV40 A1 GPU Notes

PureVideo HD: VP1
VDPAU: Not Supported

Retail boards based on this design (2)

Name GPU Clock Memory Clock Other Changes
ASUS 6800 GT Extreme Dual 350 MHz 500 MHz
GIGABYTE 6800 GT 3D1 375 MHz 500 MHz 2x DVI 2x VGA