Radeon HD 5830 vs Radeon RX 460

Intro

Compare all of that to the Radeon RX 460, which features GPU clock speed of 1090 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also features 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 5830		175 Watts
	Difference: 100 Watts (133%)

Memory Bandwidth

The Radeon HD 5830 should theoretically be a small bit faster than the Radeon RX 460 overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 is a lot (about 36%) better at AF than the Radeon HD 5830. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 16240 (36%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 460 is superior to the Radeon HD 5830, by a large margin. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 4640 (36%)

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 max amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it should 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.