GeForce 9800 GTX vs Geforce GTX 670

Intro

Compare all that to the Geforce GTX 670, which features a core clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is made up of 1344 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX		140 Watts
Geforce GTX 670		170 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 should be a lot faster than the GeForce 9800 GTX in general. (explain)

Geforce GTX 670		192000 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 121600 (173%)

Texel Rate

The Geforce GTX 670 should be much (more or less 137%) better at texture filtering than the GeForce 9800 GTX. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce 9800 GTX		43200 Mtexels/sec
	Difference: 59280 (137%)

Pixel Rate

The Geforce GTX 670 should be much (approximately 171%) more effective at AA than the GeForce 9800 GTX, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 18480 (171%)

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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.