Radeon HD 6770 1GB vs Radeon RX 480

Intro

Compare those specifications to the Radeon RX 480, which features GPU clock speed of 1120 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Radeon RX 480		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

The Radeon RX 480 should theoretically be a lot faster than the Radeon HD 6770 1GB in general. (explain)

Radeon RX 480		262144 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 194944 (290%)

Texel Rate

The Radeon RX 480 is a lot (approximately 348%) more effective at texture filtering than the Radeon HD 6770 1GB. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 125280 (348%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 480 is a better choice, by a large margin. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 21440 (149%)

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 max amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 one second.

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