GeForce GT 240 GDDR5 vs GeForce GTX 550 Ti

Intro

Compare all of that to the GeForce GTX 550 Ti, which makes use of a 40 nm design. nVidia has set the core frequency at 900 MHz. The GDDR5 memory runs at a frequency of 1026 MHz on this card. It features 192 SPUs as well as 32 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 46 Watts (66%)

Memory Bandwidth

Theoretically, the GeForce GTX 550 Ti should be much faster than the GeForce GT 240 GDDR5 in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 44096 (81%)

Texel Rate

The GeForce GTX 550 Ti should be a lot (approximately 64%) faster with regards to AF than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 11200 (64%)

Pixel Rate

The GeForce GTX 550 Ti is quite a bit (approximately 391%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 17200 (391%)

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 largest amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core 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 one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.