Radeon HD 5770 vs Radeon RX 460

Intro

Compare those specifications to the Radeon RX 460, which uses a 14 nm design. AMD has clocked the core speed at 1090 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this card. It features 896 SPUs as well as 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 5770		108 Watts
	Difference: 33 Watts (44%)

Memory Bandwidth

The Radeon RX 460, in theory, should perform a lot faster than the Radeon HD 5770 overall. (explain)

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

Texel Rate

The Radeon RX 460 is quite a bit (more or less 80%) faster with regards to anisotropic filtering than the Radeon HD 5770. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 460 is superior to the Radeon HD 5770, and very much so. (explain)

Radeon RX 460		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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.