GeForce 8800 GT 1GB vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which comes with a GPU core clock speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 1GB		105 Watts
Radeon R9 270		150 Watts
	Difference: 45 Watts (43%)

Memory Bandwidth

Performance-wise, the Radeon R9 270 should theoretically be a lot better than the GeForce 8800 GT 1GB in general. (explain)

Radeon R9 270		179200 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 121600 (211%)

Texel Rate

The Radeon R9 270 should be much (more or less 114%) better at AF than the GeForce 8800 GT 1GB. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce 8800 GT 1GB		33600 Mtexels/sec
	Difference: 38400 (114%)

Pixel Rate

The Radeon R9 270 is a lot (more or less 200%) more effective at FSAA than the GeForce 8800 GT 1GB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 19200 (200%)

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 max amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 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 maximum fill rate.