GeForce GTX 260 216SP 55 nm vs GeForce GTX 980M

Intro

Compare those specs to the GeForce GTX 980M, which has core speeds of 1038 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. 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 GTX 980M		100 Watts
GeForce GTX 260 216SP 55 nm		171 Watts
	Difference: 71 Watts (71%)

Memory Bandwidth

The GeForce GTX 980M, in theory, should be a little bit faster than the GeForce GTX 260 216SP 55 nm overall. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 16112 (14%)

Texel Rate

The GeForce GTX 980M should be quite a bit (more or less 140%) better at anisotropic filtering than the GeForce GTX 260 216SP 55 nm. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 58176 (140%)

Pixel Rate

The GeForce GTX 980M is much (approximately 312%) better at AA than the GeForce GTX 260 216SP 55 nm, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 50304 (312%)

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 information (measured in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.