GeForce GT 240 GDDR5 vs GeForce GTX 860M

Intro

Compare that to the GeForce GTX 860M, which uses a 28 nm design. nVidia has set the core frequency at 797 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this specific card. It features 1152 SPUs as well as 96 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 25 Watts (56%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 860M will be 18% quicker than the GeForce GT 240 GDDR5 in general, due to its greater data rate. (explain)

GeForce GTX 860M		64000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The GeForce GTX 860M is quite a bit (approximately 335%) more effective at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 58912 (335%)

Pixel Rate

The GeForce GTX 860M will be much (more or less 190%) better at anti-aliasing than the GeForce GT 240 GDDR5, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 860M		12752 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 8352 (190%)

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 information (in units of MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.