Product: ATI Radeon HD5450
Company: AMD
Authour: James 'caveman-jim' Prior
Editor: Charles 'Lupine' Oliver
Date: February 4th, 2010
Architectural Analysis - Cedar Core

The Cedar core completes the Evergreen family of desktop graphics products from AMD. Five months ago, AMD launched Cypress (5800 series) and has quickly followed up with Juniper (5700 series), Hemlock (5900 series) and last month with Redwood (5600 series). The Cedar core continues with the pruning back of AMD's TeraScale 2 graphics engine, now into its smallest form so far.

AMD ATi Radeon HD 5450
AMD ATi Radeon HD 5450

Rage3D asked Dave Baumann, AMD GPU Product Manager, how AMD feels about the sweet spot strategy:

"I think the past two generations of products highlight the success of the sweet spot strategy. First the employing of the sweet spot strategy with the ATI Radeon HD 4800 series enabled us to redefine the price and performance ratio in the enthusiast and performance segments, and then quickly followed up with performance and feature leading mainstream and value products very quickly, all leading with fantastic compute densities and power characteristics.

We've swiftly followed that up with the ATI Radeon HD 5000 series of products, providing unmatched feature capabilities, such as DirectX 11 and ATI Eyefinity, and we've been able to deliver a complete range of products, from the entry level value products all the way up to ultra-enthusiast levels, before anyone else has a single DirectX product on the market. On the whole, we are very pleased with our execution of the strategy."

The ATI Radeon HD 5450 features a 64-bit memory interface with either DDR2 or DDR3 memory. Partners can chose between 512MB and 1GB of onboard memory, and passive or active cooling. The reference board design is half height and passively cooled, with the third display output (VGA) connected via onboard header using a ribbon cable.

Cedar
Cedar

The AMD ATI Radeon HD 5450 is the first desktop product in the Evergreen line up not to specify GDDR5. The 64-bit memory interface with DDR3 is still capable of delivering up to 12.8GB/sec of memory bandwidth. Rage3D asked Arturo Wong Chujoy, Product Manager (ATI Radeon) why use DDR2/3 and not GDDR5?

"The mainstream and value segment is very price sensitive so using DDR3 and DDR2 memory devices enables AMD to have a strong price performance product in this segment."

In fact, AMD specifies the HD 5450 as having flexible engine specifications:

Scalable Performance
Scalable Performance

This might hint at lower specified products, for OEM desktop and office designs.

In this article, we are going to investigate the HD 5450 performance and features, and compare them with the onboard GPU of our test motherboard. The ECS A790GXM-AD3 features ATI Radeon HD3300 on it's 55nm 790GX chipset, which supports DirectX 10 and AVIVO HD.


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