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NV5 B6
Graphics Processor
Pixel Shaders
Vertex Shaders
16 MB
Memory Size
Memory Type
64 bit
Bus Width
NVIDIA Riva TNT2 M64 Image NVIDIA NV5 B6 Image
The Riva TNT2 M64 was a graphics card by NVIDIA, launched in October 1999. Built on the 250 nm process, and based on the NV5 B6 graphics processor, in its Riva TNT2 64 variant, the card supports DirectX 6.0. The NV5 B6 graphics processor is a relatively small chip with a die area of only 90 mm² and 15 million transistors. It features 2 pixel shaders and 0 vertex shaders, 2 texture mapping units and 2 ROPs. 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 16 MB SDR memory on the card, which are connected using a 64-bit memory interface. The GPU is operating at a frequency of 125 MHz, memory is running at 143 MHz.
Being a single-slot card, the NVIDIA Riva TNT2 M64 does not require any additional power connector, its power draw is not exactly known. Display outputs include: 1x VGA. Riva TNT2 M64 is connected to the rest of the system using an AGP 4x interface.

Graphics Processor

GPU Name: NV5 B6
GPU Variant: Riva TNT2 64
Architecture: Fahrenheit
Process Size: 250 nm
Transistors: 15 million
Die Size: 90 mm²

Graphics Card

Released: Oct 12th, 1999
Production Status: End-of-life
Bus Interface: AGP 4x

Clock Speeds

GPU Clock: 125 MHz
Memory Clock: 143 MHz
143 MHz effective


Memory Size: 16 MB
Memory Type: SDR
Memory Bus: 64 bit
Bandwidth: 1.144 GB/s

Render Config

Pixel Shaders: 2
Vertex Shaders: 0
TMUs: 2
ROPs: 2
Pixel Rate: 250.0 MPixel/s
Texture Rate: 250.0 MTexel/s

Board Design

Slot Width: Single-slot
TDP: unknown
Outputs: 1x VGA
Power Connectors: None

Graphics Features

DirectX: 6.0
OpenGL: 1.2
OpenCL: N/A
Pixel Shader: N/A
Vertex Shader: N/A

Retail boards based on this design (1)

Name GPU Clock Memory Clock Other Changes
ASUS V3800 Magic 125 MHz 143 MHz