Radeon HD 5830 vs Radeon RX 460

Intro

Compare those specs to the Radeon RX 460, which has 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 made up of 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

Theoretically, the Radeon HD 5830 should perform just a 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 much (approximately 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 will be much (more or less 36%) better at FSAA than the Radeon HD 5830, and will be able to handle higher screen resolutions without losing too much performance. (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 (in units of megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, 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 maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.