GeForce GT 320 vs GeForce GT 440 1.5GB

Intro

Compare those specs to the GeForce GT 440 1.5GB, which makes use of a 40 nm design. nVidia has set the core frequency at 594 MHz. The GDDR3 RAM runs at a frequency of 900 MHz on this specific card. It features 144 SPUs as well as 24 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

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 overall, due to 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 a bit (about 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

The GeForce GT 440 1.5GB should be much (more or less 230%) more effective at AA than the GeForce GT 320, and capable of handling higher resolutions better. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units of the card 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's 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 also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.