Radeon R9 285 vs Radeon RX 470 4GB

Intro

Compare that to the Radeon RX 470 4GB, which has a core clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also makes use of a 256-bit bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 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.

Ethereum Mining Hash Rate

Radeon RX 470 4GB		27 Mh/s
Radeon R9 285		18 Mh/s
	Difference: 9 (50%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 4GB		120 Watts
Radeon R9 285		190 Watts
	Difference: 70 Watts (58%)

Memory Bandwidth

In theory, the Radeon RX 470 4GB will be 20% quicker than the Radeon R9 285 overall, due to its higher bandwidth. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 35200 (20%)

Texel Rate

The Radeon RX 470 4GB should be a little bit (about 15%) faster with regards to anisotropic filtering than the Radeon R9 285. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 15712 (15%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 470 4GB is superior to the Radeon R9 285, though not by far. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 256 (1%)

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 information (in units of MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.