GeForce 8800 GTS (G80) 320MB vs GeForce GTX 980M

Intro

Compare those specifications to the GeForce GTX 980M, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1038 MHz. The GDDR5 RAM works at a speed 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 GTX 980M		100 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 43 Watts (43%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980M should theoretically be quite a bit better than the GeForce 8800 GTS (G80) 320MB in general. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 64640 (102%)

Texel Rate

The GeForce GTX 980M will be much (about 305%) better at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 75024 (305%)

Pixel Rate

The GeForce GTX 980M should be much (more or less 547%) more effective at AA than the GeForce 8800 GTS (G80) 320MB, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 56172 (547%)

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: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.