GeForce 8800 GTS (G80) 640MB vs GeForce GTX 460 SE

Intro

Compare those specs to the GeForce GTX 460 SE, which comes with core speeds of 650 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 memory. It features 288 SPUs along with 48 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 GTS (G80) 640MB		143 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 7 Watts (5%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 SE should be a lot faster than the GeForce 8800 GTS (G80) 640MB overall. (explain)

GeForce GTX 460 SE		108800 MB/sec
GeForce 8800 GTS (G80) 640MB		63360 MB/sec
	Difference: 45440 (72%)

Texel Rate

The GeForce GTX 460 SE is a lot (more or less 27%) more effective at AF than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 6576 (27%)

Pixel Rate

The GeForce GTX 460 SE will be quite a bit (approximately 103%) better at FSAA than the GeForce 8800 GTS (G80) 640MB, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
	Difference: 10540 (103%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.