Radeon HD 7950 vs Radeon RX 480 4GB

Intro

Compare those specs to the Radeon RX 480 4GB, which comes with a core clock speed of 1120 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 256-bit bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 Texture Address Units, 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.

Zcash Mining Hash Rate

Radeon RX 480 4GB		267 Sol/s
Radeon HD 7950		235 Sol/s
	Difference: 32 (14%)

Ethereum Mining Hash Rate

Radeon RX 480 4GB		25 Mh/s
Radeon HD 7950		21 Mh/s
	Difference: 4 (19%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB		150 Watts
Radeon HD 7950		200 Watts
	Difference: 50 Watts (33%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7950 should be 5% faster than the Radeon RX 480 4GB overall, due to its greater data rate. (explain)

Radeon HD 7950		240000 MB/sec
Radeon RX 480 4GB		229376 MB/sec
	Difference: 10624 (5%)

Texel Rate

The Radeon RX 480 4GB will be much (approximately 80%) faster with regards to AF than the Radeon HD 7950. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 71680 (80%)

Pixel Rate

The Radeon RX 480 4GB is a lot (approximately 40%) better at full screen anti-aliasing than the Radeon HD 7950, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 480 4GB		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: Bandwidth is the largest amount of information (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record 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 the core clock speed. 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.