Radeon HD 6770 1GB vs Radeon RX 570

Intro

Compare all that to the Radeon RX 570, which has a clock speed of 1168 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 256-bit bus, and uses a 14 nm design. It features 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB		108 Watts
Radeon RX 570		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

Theoretically, the Radeon RX 570 should perform much faster than the Radeon HD 6770 1GB overall. (explain)

Radeon RX 570		229376 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 162176 (241%)

Texel Rate

The Radeon RX 570 should be a lot (about 315%) faster with regards to anisotropic filtering than the Radeon HD 6770 1GB. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 113504 (315%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 570 is a better choice, and very much so. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 22976 (160%)

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 past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.