GeForce GT 240 GDDR5 vs GeForce GTX 980M

Intro

Compare all that to the GeForce GTX 980M, which uses a 28 nm design. nVidia has set the core speed at 1038 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this specific card. It features 1536 SPUs along with 96 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 980M		100 Watts
	Difference: 30 Watts (43%)

Memory Bandwidth

The GeForce GTX 980M should theoretically be a lot faster than the GeForce GT 240 GDDR5 in general. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 73600 (135%)

Texel Rate

The GeForce GTX 980M is much (approximately 466%) more effective at anisotropic filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 82048 (466%)

Pixel Rate

The GeForce GTX 980M should be much (approximately 1410%) faster with regards to anti-aliasing than the GeForce GT 240 GDDR5, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 62032 (1410%)

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 max amount of data (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 speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could 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 card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.