GeForce GT 430 1GB vs GeForce GTX 460 1GB

Intro

Compare those specifications to the GeForce GTX 460 1GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 RAM is set to run at a frequency of 900 MHz on this card. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 100 Watts (167%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB is 300% quicker than the GeForce GT 430 1GB overall, due to its greater data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 86400 (300%)

Texel Rate

The GeForce GTX 460 1GB should be much (more or less 238%) better at AF than the GeForce GT 430 1GB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 26600 (238%)

Pixel Rate

The GeForce GTX 460 1GB will be a lot (more or less 671%) faster with regards to FSAA than the GeForce GT 430 1GB, and capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 18800 (671%)

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 (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses 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 can be processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.