Radeon R9 285 vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which makes use of a 14 nm design. AMD has clocked the core speed at 926 MHz. The GDDR5 RAM runs at a frequency of 1650 MHz on this specific card. It features 2048 SPUs as well as 128 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.

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

Theoretically speaking, the Radeon RX 470 4GB is 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%) better at AF 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 screen resolution is important to you, then the Radeon RX 470 4GB is superior to the Radeon R9 285, but it probably won't make a huge difference. (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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.