GeForce GT 320 vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which comes with GPU core speed of 915 MHz, and 2048 MB of GDDR5 RAM set to run at 1502 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Geforce GTX 690		300 Watts
	Difference: 257 Watts (598%)

Memory Bandwidth

The Geforce GTX 690 should theoretically be a lot faster than the GeForce GT 320 overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 359232 (1421%)

Texel Rate

The Geforce GTX 690 should be quite a bit (about 1707%) more effective at AF than the GeForce GT 320. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 221280 (1707%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 690 is a better choice, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 54240 (1256%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 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.