GeForce GT 430 1GB vs GeForce GTS 450 1GB

Intro

Compare those specifications to the GeForce GTS 450 1GB, which comes with clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 46 Watts (77%)

Memory Bandwidth

Theoretically, the GeForce GTS 450 1GB should be a lot faster than the GeForce GT 430 1GB overall. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 28928 (100%)

Texel Rate

The GeForce GTS 450 1GB is quite a bit (more or less 124%) better at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 13856 (124%)

Pixel Rate

The GeForce GTS 450 1GB will be a lot (about 347%) faster with regards to anti-aliasing than the GeForce GT 430 1GB, and will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 9728 (347%)

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 information (in units of MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics 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 amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.