Radeon HD 5770 vs Radeon RX 470 4GB

Intro

Compare all of that to the Radeon RX 470 4GB, which features a GPU core clock speed of 926 MHz, and 4096 MB of GDDR5 memory running at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 12 Watts (11%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should be 175% quicker than the Radeon HD 5770 in general, because of its greater bandwidth. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 134400 (175%)

Texel Rate

The Radeon RX 470 4GB should be quite a bit (about 249%) more effective at anisotropic filtering than the Radeon HD 5770. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 84528 (249%)

Pixel Rate

The Radeon RX 470 4GB will be much (approximately 118%) faster with regards to anti-aliasing than the Radeon HD 5770, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 16032 (118%)

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 largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.