GeForce GT 240 GDDR5 vs GeForce GTX 860M

Intro

Compare that to the GeForce GTX 860M, which makes use of a 28 nm design. nVidia has set the core frequency at 797 MHz. The GDDR5 memory works at a speed of 1000 MHz on this model. It features 1152 SPUs as well as 96 TAUs and 16 ROPs.

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

Performance-wise, the GeForce GTX 860M should theoretically be a small bit superior to the GeForce GT 240 GDDR5 in general. (explain)

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

Texel Rate

The GeForce GTX 860M will be a lot (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 quite a bit (more or less 190%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5, and should be capable of handling higher screen resolutions more effectively. (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 (measured in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 are applied in one second. This is worked out by multiplying the total number of 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.