GeForce GT 240 GDDR5 vs GeForce GTX 460

Intro

Compare those specifications to the GeForce GTX 460, which features GPU clock speed of 675 MHz, and 768 MB of GDDR5 memory running at 900 MHz through a 192-bit bus. It also is comprised of 336 Stream Processors, 56 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 460		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

The GeForce GTX 460, in theory, should perform much faster than the GeForce GT 240 GDDR5 in general. (explain)

GeForce GTX 460		86400 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 32000 (59%)

Texel Rate

The GeForce GTX 460 should be much (approximately 115%) more effective at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 20200 (115%)

Pixel Rate

The GeForce GTX 460 is quite a bit (more or less 268%) faster with regards to FSAA than the GeForce GT 240 GDDR5, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 11800 (268%)

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: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.