Radeon HD 7950 3GB vs Radeon RX 590

Intro

Compare those specs to the Radeon RX 590, which has GPU core speed of 1469 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is comprised of 2304 SPUs, 144 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590		175 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 25 Watts (14%)

Memory Bandwidth

Performance-wise, the Radeon RX 590 should in theory be a bit superior to the Radeon HD 7950 3GB in general. (explain)

Radeon RX 590		262144 MB/sec
Radeon HD 7950 3GB		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 590 should be much (approximately 136%) more effective at AF than the Radeon HD 7950 3GB. (explain)

Radeon RX 590		211536 Mtexels/sec
Radeon HD 7950 3GB		89600 Mtexels/sec
	Difference: 121936 (136%)

Pixel Rate

The Radeon RX 590 is quite a bit (more or less 84%) more effective at full screen anti-aliasing than the Radeon HD 7950 3GB, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon RX 590		47008 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 21408 (84%)

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 largest amount of data (counted in megabytes per second) that can be transferred 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. If it uses DDR type RAM, it should 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.