GeForce GT 430 1GB vs GeForce GTX 460 2GB

Intro

Compare those specifications to the GeForce GTX 460 2GB, which has clock speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 memory. It features 336 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 100 Watts (167%)

Memory Bandwidth

In theory, the GeForce GTX 460 2GB will be 300% quicker than the GeForce GT 430 1GB overall, because of its higher data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 86400 (300%)

Texel Rate

The GeForce GTX 460 2GB is quite a bit (more or less 238%) better at anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 26600 (238%)

Pixel Rate

The GeForce GTX 460 2GB should be a lot (approximately 671%) faster with regards to full screen anti-aliasing than the GeForce GT 430 1GB, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 2GB		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 largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 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 texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at 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 card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.