Radeon HD 5770 vs Radeon RX 570

Intro

Compare those specs to the Radeon RX 570, which has GPU core speed of 1168 MHz, and 4096 MB of GDDR5 RAM set to run at 1750 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
Radeon RX 570		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

In theory, the Radeon RX 570 should be 199% quicker than the Radeon HD 5770 in general, because of its greater data rate. (explain)

Radeon RX 570		229376 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 152576 (199%)

Texel Rate

The Radeon RX 570 will be quite a bit (more or less 340%) more effective at AF than the Radeon HD 5770. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon HD 5770		34000 Mtexels/sec
	Difference: 115504 (340%)

Pixel Rate

The Radeon RX 570 is a lot (approximately 175%) more effective at AA than the Radeon HD 5770, and able to handle higher resolutions while still performing well. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 23776 (175%)

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 largest amount of data (measured in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 are applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output 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.