GeForce 9800 GTX vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 RAM works at a frequency of 1502 MHz on this specific card. It features 1536 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX		140 Watts
Geforce GTX 690		300 Watts
	Difference: 160 Watts (114%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 is 446% faster than the GeForce 9800 GTX in general, due to its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce 9800 GTX		70400 MB/sec
	Difference: 314112 (446%)

Texel Rate

The Geforce GTX 690 should be a lot (more or less 442%) better at anisotropic filtering than the GeForce 9800 GTX. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce 9800 GTX		43200 Mtexels/sec
	Difference: 191040 (442%)

Pixel Rate

The Geforce GTX 690 will be much (more or less 442%) more effective at full screen anti-aliasing than the GeForce 9800 GTX, and able to handle higher screen resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 47760 (442%)

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 (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If 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 texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total 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 maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.