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ATI Radeon HD 4860

ATI Radeon HD 4860 Image ATI RV790 Image

Graphics Processor

GPU Name: RV790
GPU Variant: RV790 GT
Process Size: 55 nm
Transistors: 959 million
Die Size: 282 mm²

Graphics Card

Released: Sep 9th, 2009
Production Status: End-of-life
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 700 MHz
Memory Clock: 750 MHz
3000 MHz effective

Memory

Memory Size: 512 MB
Memory Type: GDDR5
Memory Bus: 256 bit
Bandwidth: 96.0 GB/s

Render Config

Shading Units: 640
TMUs: 32
ROPs: 16
Compute Units: 8
Pixel Rate: 11.2 GPixel/s
Texture Rate: 22.4 GTexel/s
Floating-point performance: 896.0 GFLOPS

Reference Board

Slot Width: Dual-slot
TDP: 130 W
Outputs: 2x DVI
1x S-Video

Graphics Features

DirectX: 10.1
OpenGL: 3.3
OpenCL: 1.0
Shader Model: 4.1

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GPU-Z Validation

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RV790 GPU Notes

HD 4890

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
Sapphire HD 4860 1 GB 700 MHz 750 MHz 1024 MB, 1x DVI 1x HDMI 1x DisplayPort