GeForce GT 320 vs GeForce GTX 285 2GB

Intro

Compare that to the GeForce GTX 285 2GB, which features a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also features a 512-bit memory bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 161 Watts (374%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 2GB should be a lot faster than the GeForce GT 320 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 133696 (529%)

Texel Rate

The GeForce GTX 285 2GB should be quite a bit (about 300%) better at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 38880 (300%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 285 2GB is a better choice, by far. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 16416 (380%)

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 maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.