Radeon HD 5570 vs Radeon R9 270

Intro

Compare all that to the Radeon R9 270, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this model. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon R9 270		150 Watts
	Difference: 107 Watts (249%)

Memory Bandwidth

The Radeon R9 270 should theoretically perform much faster than the Radeon HD 5570 in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 150400 (522%)

Texel Rate

The Radeon R9 270 is a lot (about 454%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 59000 (454%)

Pixel Rate

The Radeon R9 270 should be much (more or less 454%) more effective at AA than the Radeon HD 5570, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 23600 (454%)

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 information (measured in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the bandwidth is, the lower the ability to reach the max fill rate.