GeForce 8800 GT 1GB vs GeForce GTX 460 2GB

Intro

Compare those specifications to the GeForce GTX 460 2GB, which comes with clock speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 RAM. It features 336 SPUs along with 56 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 460 2GB		160 Watts
	Difference: 55 Watts (52%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 2GB should be quite a bit faster than the GeForce 8800 GT 1GB overall. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 57600 (100%)

Texel Rate

The GeForce GTX 460 2GB will be a small bit (approximately 13%) faster with regards to AF than the GeForce 8800 GT 1GB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 4200 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 2GB is a better choice, and very much so. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 12000 (125%)

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: Bandwidth is the largest amount of data (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one 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 clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.