GeForce GT 320 vs GeForce GTX 285 1GB

Intro

Compare all that to the GeForce GTX 285 1GB, which uses a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 RAM works at a speed of 1242 MHz on this particular card. It features 240 SPUs as well as 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 161 Watts (374%)

Memory Bandwidth

In theory, the GeForce GTX 285 1GB should be a lot faster than the GeForce GT 320 in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 133696 (529%)

Texel Rate

The GeForce GTX 285 1GB should be much (approximately 300%) better at AF than the GeForce GT 320. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 38880 (300%)

Pixel Rate

The GeForce GTX 285 1GB will be quite a bit (about 380%) better at FSAA than the GeForce GT 320, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB		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 largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video 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 most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.