GeForce GT 320 vs GeForce GTX 260 216SP 55 nm

Intro

Compare that to the GeForce GTX 260 216SP 55 nm, which features GPU clock speed of 576 MHz, and 896 MB of GDDR3 RAM running at 999 MHz through a 448-bit bus. It also is made up of 216 Stream Processors, 72 Texture Address Units, and 28 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 128 Watts (298%)

Memory Bandwidth

In theory, the GeForce GTX 260 216SP 55 nm should be much faster than the GeForce GT 320 in general. (explain)

GeForce GTX 260 216SP 55 nm		111888 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 86608 (343%)

Texel Rate

The GeForce GTX 260 216SP 55 nm is quite a bit (about 220%) better at texture filtering than the GeForce GT 320. (explain)

GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 28512 (220%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 260 216SP 55 nm is the winner, by a large margin. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 11808 (273%)

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 max amount of data (measured in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.