GeForce 8800 GT 512MB vs Radeon R9 285

Intro

Compare that to the Radeon R9 285, which has a GPU core clock speed of 918 MHz, and 2048 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also is comprised of 1792 Stream Processors, 112 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 512MB		105 Watts
Radeon R9 285		190 Watts
	Difference: 85 Watts (81%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 should perform a lot faster than the GeForce 8800 GT 512MB in general. (explain)

Radeon R9 285		176000 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 118400 (206%)

Texel Rate

The Radeon R9 285 should be much (more or less 206%) better at AF than the GeForce 8800 GT 512MB. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 69216 (206%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 285 is the winner, by far. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 19776 (206%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 graphics card can 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.