Radeon HD 6750 vs Radeon RX 480 4GB

Intro

Compare all of that to the Radeon RX 480 4GB, which uses a 14 nm design. AMD has set the core speed at 1120 MHz. The GDDR5 RAM works at a frequency of 1750 MHz on this particular model. It features 2304 SPUs as well as 144 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 480 4GB		150 Watts
	Difference: 64 Watts (74%)

Memory Bandwidth

The Radeon RX 480 4GB, in theory, should perform much faster than the Radeon HD 6750 overall. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 165376 (258%)

Texel Rate

The Radeon RX 480 4GB is quite a bit (more or less 518%) faster with regards to texture filtering than the Radeon HD 6750. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 135180 (518%)

Pixel Rate

The Radeon RX 480 4GB will be much (approximately 209%) more effective at AA than the Radeon HD 6750, and will be capable of handling higher resolutions more effectively. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 24240 (209%)

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 maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are 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 higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.