Radeon HD 6750 1GB vs Radeon RX 550

Intro

Compare all of that to the Radeon RX 550, which has core clock speeds of 1100 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 512 SPUs along with 32 Texture Address Units 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 1GB		86 Watts
	Difference: 36 Watts (72%)

Memory Bandwidth

The Radeon RX 550 should in theory perform a lot faster than the Radeon HD 6750 1GB overall. (explain)

Radeon RX 550		114688 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 50688 (79%)

Texel Rate

The Radeon RX 550 is a lot (approximately 35%) faster with regards to anisotropic filtering than the Radeon HD 6750 1GB. (explain)

Radeon RX 550		35200 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 9100 (35%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 550 is superior to the Radeon HD 6750 1GB, and very much so. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon HD 6750 1GB		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 maximum amount of data (in units of MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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