Radeon HD 4850 X2 512MB vs Radeon RX 460 2GB

Intro

Compare those specifications to the Radeon RX 460 2GB, which features clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. 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 2GB		75 Watts
Radeon HD 4850 X2 512MB		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4850 X2 512MB will be 13% faster than the Radeon RX 460 2GB in general, due to its higher data rate. (explain)

Radeon HD 4850 X2 512MB		127104 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 15104 (13%)

Texel Rate

The Radeon RX 460 2GB should be much (more or less 22%) more effective at AF than the Radeon HD 4850 X2 512MB. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 4850 X2 512MB		50000 Mtexels/sec
	Difference: 11040 (22%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4850 X2 512MB is the winner, but not by far. (explain)

Radeon HD 4850 X2 512MB		20000 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 2560 (15%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.