GeForce GT 430 1GB vs GeForce GTX 580

Intro

Compare all of that to the GeForce GTX 580, which comes with core speeds of 772 MHz on the GPU, and 1002 MHz on the 1536 MB of GDDR5 memory. It features 512 SPUs along with 64 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTX 580		244 Watts
	Difference: 184 Watts (307%)

Memory Bandwidth

In theory, the GeForce GTX 580 is 568% quicker than the GeForce GT 430 1GB overall, due to its higher bandwidth. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 163584 (568%)

Texel Rate

The GeForce GTX 580 will be quite a bit (more or less 341%) faster with regards to anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 38208 (341%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 580 is a better choice, by far. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 34256 (1223%)

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 data (counted in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better 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 maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.