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ATI Mobility Radeon HD 4225 IGP

ATI Mobility Radeon HD 4225 IGP Image
The Mobility Radeon HD 4225 IGP was a mobile n integrated graphics solution by ATI, launched in May 2010. Built on the 55 nm process, and based on the RS880M graphics processor, the card supports DirectX 10.1. It features 40 shading units, 4 texture mapping units and 4 ROPs. The GPU is operating at a frequency of 380 MHz.
Its power draw is not exactly known. Mobility Radeon HD 4225 IGP is connected to the rest of the system using a PCIe 1.0 x16 interface.

Graphics Processor

GPU Name: RS880M
Process Size: 55 nm
Transistors: 205 million
Die Size: 73 mm²

Graphics Card

Released: May 1st, 2010
Production Status: End-of-life
Bus Interface: PCIe 1.0 x16

Clock Speeds

GPU Clock: 380 MHz
Memory Clock: System Shared

Memory

Memory Size: System Shared
Memory Type: System Shared
Memory Bus: System Shared
Bandwidth: System Dependent

Render Config

Shading Units: 40
TMUs: 4
ROPs: 4
Compute Units: 2
Pixel Rate: 1.52 GPixel/s
Texture Rate: 1.52 GTexel/s
Floating-point performance: 30.40 GFLOPS

Board Design

Slot Width: IGP
TDP: unknown

Graphics Features

DirectX: 10.1
OpenGL: 3.3
OpenCL: n/a
Shader Model: 4.1

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Card Notes

The ATI Radeon HD 4225 (sometimes also ATI Mobility Radeon HD 4225 called) is an onboard (shared Memory) graphics chip in the RS880M chipset. It is based on the HD 3400 graphics core and features the UVD 2 video engine to decode HD videos (Avivo HD - can decode two HD streams simultaneously). Compared to the HD 4200 and 4250, the 4225 offers a worse performance due to the slow clock speed.

The UVD 2 video engine is able to decode HD videos (MPEG-2, H.264, and VC-1) in all stages and allows the fluent playback of HD videos (e.g. Blu-ray) with a relative low CPU utilization (called Avivo HD). The HD 3200 was the first onboard graphics card that allows the fluent playback of Blu-ray videos. The UVD 2 in the HD 4225 supports the decoding of two video stream and therefore got a full Blu-Ray support.

The graphics core of the HD 4225 stems from the Mobility Radeon HD 3400 series and is therefore DirectX 10.1 capable. Because of the missing graphics memory, the performance of the card is a bit lower than of the HD 34x0. Theroretically, dedicated memory chips can be directly added to the chip, making it a dedicated graphics card. Because of pricing it is unclear if any manufacturer will add memory to the chip.