GeForce GT 240 GDDR5 1GB vs GeForce GTX 660 Ti

Intro

Compare that to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has clocked the core frequency at 915 MHz. The GDDR5 memory works at a speed of 1500 MHz on this particular model. It features 1344 SPUs as well as 112 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 1GB		70 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

Theoretically, the GeForce GTX 660 Ti should be much faster than the GeForce GT 240 GDDR5 1GB overall. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 89600 (165%)

Texel Rate

The GeForce GTX 660 Ti will be much (about 482%) faster with regards to anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 84880 (482%)

Pixel Rate

The GeForce GTX 660 Ti will be a lot (more or less 399%) faster with regards to AA than the GeForce GT 240 GDDR5 1GB, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 17560 (399%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has 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 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 number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number 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 many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.