Radeon HD 6770 vs Radeon RX 470 4GB

Intro

Compare that to the Radeon RX 470 4GB, which comes with core speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 12 Watts (11%)

Memory Bandwidth

As far as performance goes, the Radeon RX 470 4GB should theoretically be a lot superior to the Radeon HD 6770 overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 144000 (214%)

Texel Rate

The Radeon RX 470 4GB is quite a bit (about 229%) more effective at AF than the Radeon HD 6770. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 82528 (229%)

Pixel Rate

The Radeon RX 470 4GB should be much (about 106%) faster with regards to AA than the Radeon HD 6770, and also should be able to handle higher screen resolutions better. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 15232 (106%)

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 (counted in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.