Radeon HD 4350 vs Radeon HD 4550 512MB

Intro

Compare all of that to the Radeon HD 4550 512MB, which has GPU core speed of 600 MHz, and 512 MB of GDDR3 memory running at 800 MHz through a 64-bit bus. It also features 80(16x5) Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

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

As far as performance goes, the Radeon HD 4550 512MB should theoretically be much superior to 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 is just a bit (about 4%) more effective 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

The Radeon HD 4550 512MB will be a bit (about 4%) faster with regards to anti-aliasing than the Radeon HD 4350, and also should be able to handle higher screen resolutions more effectively. (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 information (in units of MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.