GeForce GT 315 vs GeForce GT 430 1GB

Intro

Compare those specifications to the GeForce GT 430 1GB, which comes with core clock speeds of 700 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 96 SPUs along with 16 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GT 430 1GB		60 Watts
	Difference: 8 Watts (15%)

Memory Bandwidth

The GeForce GT 430 1GB should theoretically be a small bit faster than the GeForce GT 315 overall. (explain)

GeForce GT 430 1GB		28800 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 3520 (14%)

Texel Rate

The GeForce GT 430 1GB is a little bit (more or less 12%) faster with regards to texture filtering than the GeForce GT 315. (explain)

GeForce GT 430 1GB		11200 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 1200 (12%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 315 is a better choice, and very much so. (explain)

GeForce GT 315		5000 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 2200 (79%)

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 max amount of information (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, 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 most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.