Radeon HD 6790 vs Radeon RX 460 2GB

Intro

Compare those specs to the Radeon RX 460 2GB, which has a clock frequency of 1090 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 128-bit bus, and uses a 14 nm design. It 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 2GB		75 Watts
Radeon HD 6790		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Performance-wise, the Radeon HD 6790 should in theory be a small bit better than the Radeon RX 460 2GB overall. (explain)

Radeon HD 6790		134400 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 22400 (20%)

Texel Rate

The Radeon RX 460 2GB should be much (more or less 82%) better at anisotropic filtering than the Radeon HD 6790. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 27440 (82%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 460 2GB is superior to the Radeon HD 6790, and very much so. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 4000 (30%)

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 maximum amount of information (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 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 the texel rate, the better the video card will be at handling 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 graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 output rate is also dependant on quite a few 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.