GeForce 830M vs GeForce GTX 980M

Intro

Compare those specifications to the GeForce GTX 980M, which uses a 28 nm design. nVidia has set the core speed at 1038 MHz. The GDDR5 memory works 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 830M		25 Watts
GeForce GTX 980M		100 Watts
	Difference: 75 Watts (300%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 980M should in theory be quite a bit better than the GeForce 830M overall. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 113600 (789%)

Texel Rate

The GeForce GTX 980M should be a lot (more or less 505%) better at anisotropic filtering than the GeForce 830M. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 83184 (505%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 980M is a better choice, by a large margin. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce 830M		8232 Mpixels/sec
	Difference: 58200 (707%)

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 (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.