Radeon HD 4350 vs Radeon HD 4550 512MB

Intro

Compare that to the Radeon HD 4550 512MB, which uses a 55 nm design. AMD has set the core frequency at 600 MHz. The GDDR3 RAM runs at a frequency of 800 MHz on this specific card. It features 80(16x5) SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 4550 512MB		25 Watts
	Difference: 3 Watts (14%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4550 512MB should be much faster than the Radeon HD 4350 in general. (explain)

Radeon HD 4550 512MB		12800 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 4800 (60%)

Texel Rate

The Radeon HD 4550 512MB will be a bit (approximately 4%) better at AF than the Radeon HD 4350. (explain)

Radeon HD 4550 512MB		4800 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 200 (4%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4550 512MB is a better choice, though only just barely. (explain)

Radeon HD 4550 512MB		2400 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 100 (4%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.