GeForce GT 220 GDDR3 vs Radeon HD 5570

Intro

Compare all that to the Radeon HD 5570, which makes use of a 40 nm design. AMD has set the core speed at 650 MHz. The DDR3 memory runs at a speed of 900 MHz on this specific model. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GT 220 GDDR3		58 Watts
	Difference: 15 Watts (35%)

Memory Bandwidth

Theoretically, the GeForce GT 220 GDDR3 should be a bit faster than the Radeon HD 5570 in general. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 3584 (12%)

Texel Rate

The Radeon HD 5570 should be much (about 30%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon HD 5570		13000 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 3000 (30%)

Pixel Rate

The Radeon HD 5570 will be a small bit (approximately 4%) more effective at full screen anti-aliasing than the GeForce GT 220 GDDR3, and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 5570		5200 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 200 (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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. 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 rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.