Radeon HD 5850 vs Radeon RX 460 2GB

Intro

Compare all that to the Radeon RX 460 2GB, which has GPU core speed of 1090 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon HD 5850		151 Watts
	Difference: 76 Watts (101%)

Memory Bandwidth

Performance-wise, the Radeon HD 5850 should in theory be a little bit superior to the Radeon RX 460 2GB overall. (explain)

Radeon HD 5850		128000 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 2GB should be a small bit (approximately 17%) more effective at texture filtering than the Radeon HD 5850. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 8840 (17%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 5850 is a better choice, and very much so. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 5760 (33%)

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 information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.