GeForce GT 240 GDDR5 vs GeForce GT 320

Intro

Compare that to the GeForce GT 320, which makes use of a 40 nm design. nVidia has clocked the core speed at 540 MHz. The GDDR3 RAM is set to run at a speed of 790 MHz on this specific card. It features 72 SPUs as well as 24 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 27 Watts (63%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 240 GDDR5 will be 115% quicker than the GeForce GT 320 in general, due to its higher bandwidth. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 29120 (115%)

Texel Rate

The GeForce GT 240 GDDR5 is quite a bit (about 36%) more effective at texture filtering than the GeForce GT 320. (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 4640 (36%)

Pixel Rate

The GeForce GT 240 GDDR5 is just a bit (about 2%) better at anti-aliasing than the GeForce GT 320, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce GT 240 GDDR5		4400 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 80 (2%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus 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 ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of 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 video 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 maximum amount of pixels the video card could 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 - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.