Radeon HD 6750 vs Radeon RX 550

Intro

Compare those specifications to the Radeon RX 550, which has a core clock speed of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and uses a 14 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 6750		86 Watts
	Difference: 36 Watts (72%)

Memory Bandwidth

Theoretically, the Radeon RX 550 should be quite a bit faster than the Radeon HD 6750 overall. (explain)

Radeon RX 550		114688 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 50688 (79%)

Texel Rate

The Radeon RX 550 is quite a bit (about 35%) better at texture filtering than the Radeon HD 6750. (explain)

Radeon RX 550		35200 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 9100 (35%)

Pixel Rate

The Radeon RX 550 should be much (more or less 52%) faster with regards to anti-aliasing than the Radeon HD 6750, and should be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 6000 (52%)

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 (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.