GeForce GT 130 vs GeForce GT 220 GDDR3

Intro

Compare those specs to the GeForce GT 220 GDDR3, which uses a 40 nm design. nVidia has set the core frequency at 625 MHz. The GDDR3 memory works at a frequency of 1012 MHz on this specific model. It features 48 SPUs along with 16 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GT 130		75 Watts
	Difference: 17 Watts (29%)

Memory Bandwidth

In theory, the GeForce GT 220 GDDR3 should be 170% quicker than the GeForce GT 130 in general, due to its higher bandwidth. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 20384 (170%)

Texel Rate

The GeForce GT 130 will be a small bit (more or less 20%) better at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GT 130		12000 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 2000 (20%)

Pixel Rate

The GeForce GT 130 is a lot (more or less 60%) more effective at anti-aliasing than the GeForce GT 220 GDDR3, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GT 130		8000 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 3000 (60%)

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 maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics 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 number 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 calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.