Radeon HD 4790 vs Radeon RX 460

Intro

Compare those specs to the Radeon RX 460, which uses a 14 nm design. AMD has clocked the core frequency at 1090 MHz. The GDDR5 RAM works at a speed of 1750 MHz on this particular model. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 460 should in theory perform a little bit faster than the Radeon HD 4790 in general. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 4790		102400 MB/sec
	Difference: 9600 (9%)

Texel Rate

The Radeon RX 460 will be much (more or less 218%) better at anisotropic filtering than the Radeon HD 4790. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 4790		19200 Mtexels/sec
	Difference: 41840 (218%)

Pixel Rate

If using lots of anti-aliasing 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 4790		9600 Mpixels/sec
	Difference: 7840 (82%)

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 information (counted in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.