Radeon HD 5670 vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which features core clock speeds of 926 MHz on the GPU, and 1650 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 59 Watts (97%)

Memory Bandwidth

Theoretically, the Radeon RX 470 4GB should be much faster than the Radeon HD 5670 in general. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 147200 (230%)

Texel Rate

The Radeon RX 470 4GB should be much (approximately 665%) more effective at anisotropic filtering than the Radeon HD 5670. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 103028 (665%)

Pixel Rate

The Radeon RX 470 4GB will be quite a bit (about 378%) better at anti-aliasing than the Radeon HD 5670, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 23432 (378%)

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 MB per second) that can be transferred across 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 the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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