GeForce GT 320 vs Geforce GTX 680

Intro

Compare those specs to the Geforce GTX 680, which uses a 28 nm design. nVidia has set the core speed at 1006 MHz. The GDDR5 memory runs at a frequency of 1502 MHz on this specific card. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Geforce GTX 680		195 Watts
	Difference: 152 Watts (353%)

Memory Bandwidth

Performance-wise, the Geforce GTX 680 should theoretically be a lot superior to the GeForce GT 320 in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 166976 (661%)

Texel Rate

The Geforce GTX 680 is quite a bit (about 894%) faster with regards to texture filtering than the GeForce GT 320. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 115808 (894%)

Pixel Rate

The Geforce GTX 680 is a lot (more or less 645%) better at AA than the GeForce GT 320, and also will be able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 27872 (645%)

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 (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling 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 write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.