GeForce 8800 GT 1GB vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which comes with core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce 8800 GT 1GB		105 Watts
	Difference: 30 Watts (40%)

Memory Bandwidth

The Radeon R9 M280X should in theory be much faster than the GeForce 8800 GT 1GB in general. (explain)

Radeon R9 M280X		88000 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 30400 (53%)

Texel Rate

The Radeon R9 M280X should be a lot (more or less 50%) faster with regards to AF than the GeForce 8800 GT 1GB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 16800 (50%)

Pixel Rate

The Radeon R9 M280X should be quite a bit (more or less 50%) more effective at FSAA than the GeForce 8800 GT 1GB, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M280X		14400 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 4800 (50%)

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 largest amount of data (counted in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.