Radeon HD 6750 vs Radeon RX 470 4GB

Intro

Compare all that to the Radeon RX 470 4GB, which features GPU clock speed of 926 MHz, and 4096 MB of GDDR5 memory set to run at 1650 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 34 Watts (40%)

Memory Bandwidth

Performance-wise, the Radeon RX 470 4GB should in theory be much superior to the Radeon HD 6750 overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 147200 (230%)

Texel Rate

The Radeon RX 470 4GB is a lot (approximately 354%) more effective at anisotropic filtering than the Radeon HD 6750. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 92428 (354%)

Pixel Rate

The Radeon RX 470 4GB should be a lot (more or less 155%) more effective at full screen anti-aliasing than the Radeon HD 6750, and will be capable of handling higher screen resolutions better. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 18032 (155%)

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 (measured in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.