Radeon HD 7950 vs Radeon RX 480

Intro

Compare those specifications to the Radeon RX 480, which features clock speeds of 1120 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs along with 144 TAUs and 32 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 RX 480		13349 points
Radeon HD 7950		7731 points
	Difference: 5618 (73%)

Zcash Mining Hash Rate

Radeon RX 480		280 Sol/s
Radeon HD 7950		235 Sol/s
	Difference: 45 (19%)

Ethereum Mining Hash Rate

Radeon RX 480		27 Mh/s
Radeon HD 7950		21 Mh/s
	Difference: 6 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480		150 Watts
Radeon HD 7950		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon RX 480 should in theory be just a bit superior to the Radeon HD 7950 overall. (explain)

Radeon RX 480		262144 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 22144 (9%)

Texel Rate

The Radeon RX 480 is a lot (approximately 80%) better at texture filtering than the Radeon HD 7950. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 71680 (80%)

Pixel Rate

The Radeon RX 480 will be much (about 40%) better at AA than the Radeon HD 7950, and able to handle higher screen resolutions more effectively. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 10240 (40%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.