GeForce 8800 GT 256MB vs Radeon RX 460

Intro

Compare those specifications to the Radeon RX 460, which comes with core clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 30 Watts (40%)

Memory Bandwidth

In theory, the Radeon RX 460 should be 150% faster than the GeForce 8800 GT 256MB overall, due to its greater data rate. (explain)

Radeon RX 460		112000 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 67200 (150%)

Texel Rate

The Radeon RX 460 is a lot (about 82%) better at texture filtering than the GeForce 8800 GT 256MB. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 27440 (82%)

Pixel Rate

The Radeon RX 460 will be much (approximately 82%) more effective at FSAA than the GeForce 8800 GT 256MB, and capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 460		17440 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 7840 (82%)

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 data (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.