GeForce GT 430 vs GeForce GTX 480

Intro

Compare that to the GeForce GTX 480, which features a GPU core clock speed of 700 MHz, and 1536 MB of GDDR5 RAM set to run at 924 MHz through a 384-bit bus. It also features 480 Stream Processors, 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

As far as performance goes, the GeForce GTX 480 should theoretically be much superior to the GeForce GT 430 overall. (explain)

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

Texel Rate

The GeForce GTX 480 will be much (approximately 275%) better at anisotropic 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 (about 1100%) better at full screen anti-aliasing than the GeForce GT 430, and also will be capable of handling higher 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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.