Radeon HD 7950 3GB vs Radeon RX 460

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 125 Watts (167%)

Memory Bandwidth

The Radeon HD 7950 3GB, in theory, should be a lot faster than the Radeon RX 460 in general. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 128000 (114%)

Texel Rate

The Radeon HD 7950 3GB should be much (about 47%) faster with regards to AF than the Radeon RX 460. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon RX 460		61040 Mtexels/sec
	Difference: 28560 (47%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7950 3GB is the winner, by far. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 8160 (47%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.