Radeon HD 7970 vs Radeon RX 550

Intro

Compare those specifications to the Radeon RX 550, which has GPU core speed of 1100 MHz, and 2048 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7970		8225 points
Radeon RX 550		3507 points
	Difference: 4718 (135%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon HD 7970		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should perform a lot faster than the Radeon RX 550 in general. (explain)

Radeon HD 7970		264000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 149312 (130%)

Texel Rate

The Radeon HD 7970 is a lot (more or less 236%) better at anisotropic filtering than the Radeon RX 550. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 83200 (236%)

Pixel Rate

The Radeon HD 7970 is much (more or less 68%) more effective at full screen anti-aliasing than the Radeon RX 550, and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 12000 (68%)

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 megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video 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 amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 potential to get to the maximum fill rate.