GeForce GT 320 vs GeForce GT 440 1.5GB

Intro

Compare those specifications to the GeForce GT 440 1.5GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 memory runs at a speed of 900 MHz on this particular card. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GT 440 1.5GB		56 Watts
	Difference: 13 Watts (30%)

Memory Bandwidth

In theory, the GeForce GT 440 1.5GB should be 71% faster than the GeForce GT 320 in general, because of its higher data rate. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 17920 (71%)

Texel Rate

The GeForce GT 440 1.5GB is just a bit (more or less 10%) more effective at AF than the GeForce GT 320. (explain)

GeForce GT 440 1.5GB		14256 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 1296 (10%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 440 1.5GB is a better choice, by far. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 9936 (230%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If it uses 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the 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 graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to 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 potential to get to the max fill rate.