GeForce GT 320 vs GeForce GT 440 1.5GB

Intro

Compare those specifications to the GeForce GT 440 1.5GB, which comes with a core clock speed of 594 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 192-bit bus, and uses a 40 nm design. It is made up of 144 SPUs, 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

Performance-wise, the GeForce GT 440 1.5GB should in theory be a lot superior to the GeForce GT 320 overall. (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 will be a little bit (approximately 10%) more effective at texture filtering 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 is much (approximately 230%) more effective at full screen anti-aliasing 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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.