GeForce 9800 GX2 vs GeForce GTX 960M

Intro

Compare all of that to the GeForce GTX 960M, which comes with GPU clock speed of 1096 MHz, and 2048 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960M		65 Watts
GeForce 9800 GX2		197 Watts
	Difference: 132 Watts (203%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GX2 will be 100% faster than the GeForce GTX 960M in general, due to its higher bandwidth. (explain)

GeForce 9800 GX2		128000 MB/sec
GeForce GTX 960M		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The GeForce 9800 GX2 should be much (about 75%) better at AF than the GeForce GTX 960M. (explain)

GeForce 9800 GX2		76800 Mtexels/sec
GeForce GTX 960M		43840 Mtexels/sec
	Difference: 32960 (75%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 9800 GX2 is superior to the GeForce GTX 960M, but not by far. (explain)

GeForce 9800 GX2		19200 Mpixels/sec
GeForce GTX 960M		17536 Mpixels/sec
	Difference: 1664 (9%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.