Radeon HD 7950 vs Radeon RX 470

Intro

Compare all of that to the Radeon RX 470, which has a clock speed of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It features 2048 SPUs, 128 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 470		11756 points
Radeon HD 7950		7731 points
	Difference: 4025 (52%)

Zcash Mining Hash Rate

Radeon RX 470		289 Sol/s
Radeon HD 7950		235 Sol/s
	Difference: 54 (23%)

Ethereum Mining Hash Rate

Radeon RX 470		26 Mh/s
Radeon HD 7950		21 Mh/s
	Difference: 5 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
Radeon HD 7950		200 Watts
	Difference: 80 Watts (67%)

Memory Bandwidth

The Radeon HD 7950 should theoretically perform a small bit faster than the Radeon RX 470 overall. (explain)

Radeon HD 7950		240000 MB/sec
Radeon RX 470		211200 MB/sec
	Difference: 28800 (14%)

Texel Rate

The Radeon RX 470 is much (approximately 32%) faster with regards to texture filtering than the Radeon HD 7950. (explain)

Radeon RX 470		118528 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 28928 (32%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 is superior to the Radeon HD 7950, though only just barely. (explain)

Radeon RX 470		29632 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 4032 (16%)

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 data (measured in MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.