Radeon HD 4830 1GB vs Radeon RX 460

Intro

Compare those specs to the Radeon RX 460, which comes with a core clock speed of 1090 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 128-bit memory bus, and makes use of a 14 nm design. It is made up of 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		75 Watts
Radeon HD 4830 1GB		95 Watts
	Difference: 20 Watts (27%)

Memory Bandwidth

As far as performance goes, the Radeon RX 460 should in theory be much superior to the Radeon HD 4830 1GB overall. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 54400 (94%)

Texel Rate

The Radeon RX 460 will be quite a bit (approximately 232%) more effective at texture filtering than the Radeon HD 4830 1GB. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 42640 (232%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 460 is a better choice, by a large margin. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 8240 (90%)

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 max amount of information (measured in megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 applied in one 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 higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few 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.