Radeon HD 6750 vs Radeon RX 480

Intro

Compare all that to the Radeon RX 480, which comes with GPU core speed of 1120 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Performance-wise, the Radeon RX 480 should in theory be quite a bit better than the Radeon HD 6750 in general. (explain)

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

Texel Rate

The Radeon RX 480 should be a lot (approximately 518%) faster with regards to AF than the Radeon HD 6750. (explain)

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

Pixel Rate

The Radeon RX 480 should be quite a bit (approximately 209%) faster with regards to AA than the Radeon HD 6750, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 480		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: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.