GeForce GT 240 GDDR5 1GB vs GeForce GTX 560

Intro

Compare all of that to the GeForce GTX 560, which has a core clock speed of 810 MHz and a GDDR5 memory speed of 1001 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is made up of 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
GeForce GTX 560		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 should perform quite a bit faster than the GeForce GT 240 GDDR5 1GB in general. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 73728 (136%)

Texel Rate

The GeForce GTX 560 will be quite a bit (more or less 158%) better at texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTX 560		45360 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 27760 (158%)

Pixel Rate

The GeForce GTX 560 will be quite a bit (about 489%) better at anti-aliasing than the GeForce GT 240 GDDR5 1GB, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 21520 (489%)

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 maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.