Radeon HD 6770 1GB vs Radeon RX 460 2GB

Intro

Compare that to the Radeon RX 460 2GB, which features core clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 896 SPUs along with 56 TAUs 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 6770 1GB		108 Watts
	Difference: 33 Watts (44%)

Memory Bandwidth

Performance-wise, the Radeon RX 460 2GB should in theory be much superior to the Radeon HD 6770 1GB in general. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 44800 (67%)

Texel Rate

The Radeon RX 460 2GB is much (about 70%) better at anisotropic filtering than the Radeon HD 6770 1GB. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 25040 (70%)

Pixel Rate

The Radeon RX 460 2GB is much (more or less 21%) faster with regards to AA than the Radeon HD 6770 1GB, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 3040 (21%)

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 megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines 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 fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.