GeForce GT 320 vs GeForce GT 430

Intro

Compare all that to the GeForce GT 430, which makes use of a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this particular model. It features 96 SPUs as well as 16 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GT 430		60 Watts
	Difference: 17 Watts (40%)

Memory Bandwidth

Theoretically, the GeForce GT 430 should be a bit faster than the GeForce GT 320 in general. (explain)

GeForce GT 430		28800 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 3520 (14%)

Texel Rate

The GeForce GT 320 is just a bit (more or less 16%) better at anisotropic filtering than the GeForce GT 430. (explain)

GeForce GT 320		12960 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 1760 (16%)

Pixel Rate

The GeForce GT 320 will be a lot (approximately 54%) better at FSAA than the GeForce GT 430, and also capable of handling higher resolutions more effectively. (explain)

GeForce GT 320		4320 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 1520 (54%)

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 max amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.