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ATI Radeon HD 4850 X2

ATI Radeon HD 4850 X2 Image ATI R700 Image
The Radeon HD 4850 X2 was a high-end graphics card by ATI, launched in November 2008. Built on the 55 nm process, and based on the R700 graphics processor, in its R700 PRO variant, the card supports DirectX 10.1. The R700 graphics processor is an average sized chip with a die area of 256 mm² and 956 million transistors. Radeon HD 4850 X2 combines two graphics processors to increase performance. It features 800 shading units, 40 texture mapping units and 16 ROPs per GPU. ATI has placed 1,024 MB GDDR3 memory on the card, which are connected using a 256-bit memory interface per GPU (each GPU manages 512 MB). The GPU is operating at a frequency of 625 MHz, memory is running at 995 MHz.
We recommend the ATI Radeon HD 4850 X2 for gaming with highest details at resolutions up to, and including, 1680x1050.
Being a dual-slot card, the ATI Radeon HD 4850 X2 draws power from 1x 6-pin + 1x 8-pin power connectors, with power draw rated at 250 W maximum. Display outputs include: 4x DVI, 1x S-Video. Radeon HD 4850 X2 is connected to the rest of the system using a PCIe 2.0 x16 interface. The card measures 267 mm in length, and features a dual-slot cooling solution. Its price at launch was 420 US Dollars.

Graphics Processor

GPU Name: R700
GPU Variant: R700 PRO
Architecture: TeraScale
Process Size: 55 nm
Transistors: 956 million
Die Size: 256 mm²

Graphics Card

Released: Nov 7th, 2008
Production Status: End-of-life
Launch Price: 420 USD
Bus Interface: PCIe 2.0 x16

Clock Speeds

GPU Clock: 625 MHz
Memory Clock: 995 MHz
1990 MHz effective


Memory Size: 512 MB x2
Memory Type: GDDR3
Memory Bus: 256 bit x2
Bandwidth: 63.7 GB/s x2

Render Config

Shading Units: 800 x2
TMUs: 40 x2
ROPs: 16 x2
Compute Units: 10 x2
Pixel Rate: 10.00 GPixel/s x2
Texture Rate: 25.00 GTexel/s x2
Floating-point performance: 1,000.0 GFLOPS x2

Board Design

Slot Width: Dual-slot
Length: 10.51 inches
267 mm
TDP: 250 W
Outputs: 4x DVI
1x S-Video
Power Connectors: 1x 6-pin + 1x 8-pin
Board Number: B501

Graphics Features

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


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Our review database contains 26 reviews of the Radeon HD 4850 X2.

Retail boards based on this design

Name GPU Clock Memory Clock Other Changes
Sapphire HD 4850 X2 2 GB 625 MHz 995 MHz 1024 MB