GeForce GT 320 vs GeForce GTX 280

Intro

Compare those specs to the GeForce GTX 280, which comes with core clock speeds of 602 MHz on the GPU, and 1107 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 280		236 Watts
	Difference: 193 Watts (449%)

Memory Bandwidth

The GeForce GTX 280 should theoretically perform much faster than the GeForce GT 320 overall. (explain)

GeForce GTX 280		141696 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 116416 (461%)

Texel Rate

The GeForce GTX 280 is a lot (about 272%) more effective at AF than the GeForce GT 320. (explain)

GeForce GTX 280		48160 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 35200 (272%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 280 is superior to the GeForce GT 320, by a large margin. (explain)

GeForce GTX 280		19264 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 14944 (346%)

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 MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at 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 write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.