Radeon HD 5770 vs Radeon RX 460 2GB

Intro

Compare all that to the Radeon RX 460 2GB, which has GPU clock speed of 1090 MHz, and 2048 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also features 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 5770		108 Watts
	Difference: 33 Watts (44%)

Memory Bandwidth

As far as performance goes, the Radeon RX 460 2GB should theoretically be a lot better than the Radeon HD 5770 overall. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 35200 (46%)

Texel Rate

The Radeon RX 460 2GB will be quite a bit (more or less 80%) better at anisotropic filtering than the Radeon HD 5770. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 27040 (80%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 460 2GB is a better choice, by far. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 3840 (28%)

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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, 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 number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.