GeForce GT 240 GDDR5 1GB vs GeForce GT 430 1GB

Intro

Compare all of that to the GeForce GT 430 1GB, which comes with clock speeds of 700 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 96 SPUs along with 16 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB		60 Watts
GeForce GT 240 GDDR5 1GB		70 Watts
	Difference: 10 Watts (17%)

Memory Bandwidth

The GeForce GT 240 GDDR5 1GB should theoretically be a lot faster than the GeForce GT 430 1GB overall. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 25600 (89%)

Texel Rate

The GeForce GT 240 GDDR5 1GB is a lot (more or less 57%) faster with regards to AF than the GeForce GT 430 1GB. (explain)

GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 6400 (57%)

Pixel Rate

The GeForce GT 240 GDDR5 1GB will be much (more or less 57%) faster with regards to FSAA than the GeForce GT 430 1GB, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 1600 (57%)

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 across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.