GeForce GT 320 vs GeForce GTX 470

Intro

Compare all that to the GeForce GTX 470, which features GPU core speed of 607 MHz, and 1280 MB of GDDR5 memory running at 837 MHz through a 320-bit bus. It also features 448 Stream Processors, 56 TAUs, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 470		215 Watts
	Difference: 172 Watts (400%)

Memory Bandwidth

Theoretically, the GeForce GTX 470 should be much faster than the GeForce GT 320 in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 108640 (430%)

Texel Rate

The GeForce GTX 470 should be much (about 162%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 21032 (162%)

Pixel Rate

The GeForce GTX 470 will be quite a bit (more or less 462%) more effective at full screen anti-aliasing than the GeForce GT 320, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 19960 (462%)

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 (measured in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.