GeForce 8800 GT 512MB vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which uses a 14 nm design. AMD has clocked the core speed at 1120 MHz. The GDDR5 RAM is set to run at a frequency of 2000 MHz on this model. It features 2304 SPUs along with 144 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Radeon RX 480		150 Watts
	Difference: 45 Watts (43%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 480 should be 355% quicker than the GeForce 8800 GT 512MB overall, due to its higher bandwidth. (explain)

Radeon RX 480		262144 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 204544 (355%)

Texel Rate

The Radeon RX 480 should be much (more or less 380%) more effective at texture filtering than the GeForce 8800 GT 512MB. (explain)

Radeon RX 480		161280 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 127680 (380%)

Pixel Rate

The Radeon RX 480 will be a lot (about 273%) better at full screen anti-aliasing than the GeForce 8800 GT 512MB, and will be able to handle higher resolutions better. (explain)

Radeon RX 480		35840 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 26240 (273%)

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 information (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, 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 card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.