GeForce GT 240 GDDR5 vs GeForce GTX 980M

Intro

Compare all of that to the GeForce GTX 980M, which uses a 28 nm design. nVidia has clocked the core frequency at 1038 MHz. The GDDR5 RAM works at a frequency of 1000 MHz on this card. It features 1536 SPUs as well as 96 Texture Address Units 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

Performance-wise, the GeForce GTX 980M should theoretically be a lot superior to 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 will be quite a bit (approximately 466%) faster with regards to AF 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 is quite a bit (about 1410%) better at AA than the GeForce GT 240 GDDR5, and will be able to handle higher screen resolutions more effectively. (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 maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied in one second. This figure is worked out 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's 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 is also dependant 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.