GeForce 9800 GX2 vs GeForce GTX 1070

Intro

Compare all of that to the GeForce GTX 1070, which comes with clock speeds of 1506 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 memory. It features 1920 SPUs as well as 120 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070		150 Watts
GeForce 9800 GX2		197 Watts
	Difference: 47 Watts (31%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 1070 should in theory be much superior to the GeForce 9800 GX2 overall. (explain)

GeForce GTX 1070		262144 MB/sec
GeForce 9800 GX2		128000 MB/sec
	Difference: 134144 (105%)

Texel Rate

The GeForce GTX 1070 will be a lot (more or less 135%) more effective at AF than the GeForce 9800 GX2. (explain)

GeForce GTX 1070		180720 Mtexels/sec
GeForce 9800 GX2		76800 Mtexels/sec
	Difference: 103920 (135%)

Pixel Rate

The GeForce GTX 1070 should be a lot (more or less 402%) more effective at anti-aliasing than the GeForce 9800 GX2, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 1070		96384 Mpixels/sec
GeForce 9800 GX2		19200 Mpixels/sec
	Difference: 77184 (402%)

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 maximum amount of information (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.