Radeon HD 5830 vs Radeon RX 460

Intro

Compare that to the Radeon RX 460, which comes with GPU core speed of 1090 MHz, and 4096 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 TAUs, 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 in theory be just a bit faster than the Radeon RX 460 in general. (explain)

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

Texel Rate

The Radeon RX 460 should be quite a bit (approximately 36%) better at anisotropic filtering 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 a high screen resolution is important to you, then the Radeon RX 460 is the winner, and very much so. (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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR 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 are processed per second. This is worked out by multiplying the total texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.