GeForce GTX 570 vs Radeon HD 4550 512MB

Intro

Compare those specs to the Radeon HD 4550 512MB, which has GPU clock speed of 600 MHz, and 512 MB of GDDR3 memory running at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
GeForce GTX 570		219 Watts
	Difference: 194 Watts (776%)

Memory Bandwidth

The GeForce GTX 570 should in theory perform a lot faster than the Radeon HD 4550 512MB overall. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 139200 (1088%)

Texel Rate

The GeForce GTX 570 should be much (about 815%) more effective at texture filtering than the Radeon HD 4550 512MB. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 39120 (815%)

Pixel Rate

The GeForce GTX 570 is quite a bit (about 1120%) better at anti-aliasing than the Radeon HD 4550 512MB, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 26880 (1120%)

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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.