Radeon HD 5770 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which comes with GPU clock speed of 926 MHz, and 4096 MB of GDDR5 RAM running at 1650 MHz through a 256-bit bus. It also features 2048 Stream Processors, 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

In theory, the Radeon RX 470 4GB should perform a lot faster than the Radeon HD 5770 in general. (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 (approximately 249%) faster with regards to 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 should be a lot (about 118%) better at AA than the Radeon HD 5770, and also should be capable of handling higher resolutions while still performing well. (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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 are applied per second. This is calculated by multiplying the total amount of texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.