Radeon R9 285 vs Radeon RX 480 4GB

Intro

Compare that to the Radeon RX 480 4GB, which comes with a clock speed of 1120 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit bus, and uses a 14 nm design. It is comprised of 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.

Ethereum Mining Hash Rate

Radeon RX 480 4GB		25 Mh/s
Radeon R9 285		18 Mh/s
	Difference: 7 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB		150 Watts
Radeon R9 285		190 Watts
	Difference: 40 Watts (27%)

Memory Bandwidth

As far as performance goes, the Radeon RX 480 4GB should in theory be quite a bit superior to the Radeon R9 285 in general. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 53376 (30%)

Texel Rate

The Radeon RX 480 4GB will be much (approximately 57%) faster with regards to texture filtering than the Radeon R9 285. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 58464 (57%)

Pixel Rate

The Radeon RX 480 4GB is quite a bit (more or less 22%) faster with regards to full screen anti-aliasing than the Radeon R9 285, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 6464 (22%)

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 data (in units of MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core 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 output 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 ability to get to the maximum fill rate.