Radeon HD 6770 vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which makes use of a 14 nm design. AMD has clocked the core speed at 1120 MHz. The GDDR5 memory runs at a frequency of 2000 MHz on this specific model. It features 2304 SPUs along with 144 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 480		13349 points
Radeon HD 6770		1520 points
	Difference: 11829 (778%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the Radeon RX 480 should be a lot faster than the Radeon HD 6770 in general. (explain)

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

Texel Rate

The Radeon RX 480 will be a lot (approximately 348%) more effective at anisotropic filtering than the Radeon HD 6770. (explain)

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

Pixel Rate

The Radeon RX 480 is a lot (approximately 149%) more effective at AA than the Radeon HD 6770, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 6770		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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video 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 number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.