GeForce GTX 1080 vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which makes use of a 28 nm design. AMD has clocked the core speed at 918 MHz. The GDDR5 memory runs at a speed of 1375 MHz on this card. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

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

GeForce GTX 1080		21942 points
Radeon R9 285		8500 points
	Difference: 13442 (158%)

Ethereum Mining Hash Rate

GeForce GTX 1080		20 Mh/s
Radeon R9 285		18 Mh/s
	Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
Radeon R9 285		190 Watts
	Difference: 10 Watts (6%)

Memory Bandwidth

The GeForce GTX 1080 should in theory be a lot faster than the Radeon R9 285 overall. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 151680 (86%)

Texel Rate

The GeForce GTX 1080 should be much (about 150%) better at AF than the Radeon R9 285. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 154304 (150%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 1080 is a better choice, by far. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 73472 (250%)

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 maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.