Radeon HD 6750 1GB vs Radeon RX 480

Intro

Compare those specifications to the Radeon RX 480, which comes with GPU clock speed of 1120 MHz, and 8192 MB of GDDR5 memory running at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon RX 480		150 Watts
	Difference: 64 Watts (74%)

Memory Bandwidth

In theory, the Radeon RX 480 will be 310% faster than the Radeon HD 6750 1GB in general, due to its higher bandwidth. (explain)

Radeon RX 480		262144 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 198144 (310%)

Texel Rate

The Radeon RX 480 is much (approximately 518%) better at anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 135180 (518%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 480 is superior to the Radeon HD 6750 1GB, by a large margin. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 6750 1GB		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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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