Radeon HD 6750 vs Radeon RX 470 4GB

Intro

Compare that to the Radeon RX 470 4GB, which makes use of a 14 nm design. AMD has set the core frequency at 926 MHz. The GDDR5 RAM runs at a speed of 1650 MHz on this particular model. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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

Theoretically speaking, the Radeon RX 470 4GB is 230% faster than the Radeon HD 6750 overall, due to its greater data rate. (explain)

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

Texel Rate

The Radeon RX 470 4GB will be quite a bit (about 354%) faster with regards to 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

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 4GB is the winner, by a large margin. (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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling 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 record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.