Radeon HD 7950 vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which comes with GPU core speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also is made up of 2304 Stream Processors, 144 TAUs, and 32 Raster Operation Units.

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 RX 580		13630 points
Radeon HD 7950		7731 points
	Difference: 5899 (76%)

Zcash Mining Hash Rate

Radeon RX 580		315 Sol/s
Radeon HD 7950		235 Sol/s
	Difference: 80 (34%)

Ethereum Mining Hash Rate

Radeon RX 580		28 Mh/s
Radeon HD 7950		21 Mh/s
	Difference: 7 (33%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
Radeon HD 7950		200 Watts
	Difference: 15 Watts (8%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 580 should perform a small bit faster than the Radeon HD 7950 in general. (explain)

Radeon RX 580		262144 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 580 will be a lot (about 102%) more effective at AF than the Radeon HD 7950. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 91408 (102%)

Pixel Rate

The Radeon RX 580 is a lot (more or less 57%) more effective at full screen anti-aliasing than the Radeon HD 7950, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 14624 (57%)

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: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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 number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.