GeForce GT 430 vs GeForce GTX 480

Intro

Compare those specifications to the GeForce GTX 480, which comes with a core clock frequency of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also uses a 384-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 60 Texture Address Units, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430		60 Watts
GeForce GTX 480		250 Watts
	Difference: 190 Watts (317%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 should be 516% faster than the GeForce GT 430 in general, due to its higher bandwidth. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 148608 (516%)

Texel Rate

The GeForce GTX 480 is quite a bit (about 275%) better at texture filtering than the GeForce GT 430. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 30800 (275%)

Pixel Rate

The GeForce GTX 480 is quite a bit (approximately 1100%) better at AA than the GeForce GT 430, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 30800 (1100%)

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 data (in units of MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that are processed per second. This figure is worked out 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card 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 Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). 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 get to the maximum fill rate.