GeForce 8800 GT 1GB vs Geforce GTX 690

Intro

Compare all of that to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 RAM runs at a speed of 1502 MHz on this model. It features 1536 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
Geforce GTX 690		300 Watts
	Difference: 195 Watts (186%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should theoretically be a lot better than the GeForce 8800 GT 1GB in general. (explain)

Geforce GTX 690		384512 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 326912 (568%)

Texel Rate

The Geforce GTX 690 should be much (more or less 597%) better at texture filtering than the GeForce 8800 GT 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 200640 (597%)

Pixel Rate

The Geforce GTX 690 will be quite a bit (more or less 510%) better at anti-aliasing than the GeForce 8800 GT 1GB, and also will be able to handle higher screen resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 48960 (510%)

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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of 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 most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.