Radeon HD 6770 1GB vs Radeon RX 470

Intro

Compare all of that to the Radeon RX 470, which comes with a core clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also uses a 256-bit bus, and makes use of a 14 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Radeon RX 470		120 Watts
	Difference: 12 Watts (11%)

Memory Bandwidth

In theory, the Radeon RX 470 should be 214% quicker than the Radeon HD 6770 1GB in general, due to its higher data rate. (explain)

Radeon RX 470		211200 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 144000 (214%)

Texel Rate

The Radeon RX 470 is a lot (more or less 229%) better at AF than the Radeon HD 6770 1GB. (explain)

Radeon RX 470		118528 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 82528 (229%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 is superior to the Radeon HD 6770 1GB, by a large margin. (explain)

Radeon RX 470		29632 Mpixels/sec
Radeon HD 6770 1GB		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 (in units of megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 can be applied in one second. This figure is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.