Radeon HD 7950 3GB vs Radeon RX 550

Intro

Compare all that to the Radeon RX 550, which uses a 14 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM is set to run at a speed of 1750 MHz on this card. It features 512 SPUs as well as 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 7950 3GB		200 Watts
	Difference: 150 Watts (300%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 3GB should be quite a bit faster than the Radeon RX 550 overall. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 125312 (109%)

Texel Rate

The Radeon HD 7950 3GB should be quite a bit (more or less 155%) better at AF than the Radeon RX 550. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 54400 (155%)

Pixel Rate

The Radeon HD 7950 3GB will be quite a bit (approximately 45%) more effective at FSAA than the Radeon RX 550, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 8000 (45%)

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 information (counted in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, 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 number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.