Radeon HD 5830 vs Radeon RX 460

Intro

Compare all that to the Radeon RX 460, which features a GPU core clock speed of 1090 MHz, and 4096 MB of GDDR5 RAM set to run 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

As far as performance goes, the Radeon HD 5830 should theoretically be a bit superior to 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 is much (about 36%) more effective 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

The Radeon RX 460 should be much (more or less 36%) faster with regards to full screen anti-aliasing than the Radeon HD 5830, and able to handle higher screen resolutions better. (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 largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.