GeForce GT 320 vs GeForce GTX 460 2GB

Intro

Compare that to the GeForce GTX 460 2GB, which uses a 40 nm design. nVidia has set the core frequency at 675 MHz. The GDDR5 RAM works at a speed of 900 MHz on this card. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 117 Watts (272%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 2GB should in theory be quite a bit superior to the GeForce GT 320 in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 89920 (356%)

Texel Rate

The GeForce GTX 460 2GB should be a lot (approximately 192%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 24840 (192%)

Pixel Rate

The GeForce GTX 460 2GB should be quite a bit (approximately 400%) better at anti-aliasing than the GeForce GT 320, and also should be able to handle higher screen resolutions better. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 17280 (400%)

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 max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.