GeForce GTX 1080 vs Radeon R9 390 8G

Intro

Compare those specs to the Radeon R9 390 8G, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a frequency of 1500 MHz on this card. It features 2560 SPUs as well as 160 TAUs and 64 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

GeForce GTX 1080		21942 points
Radeon R9 390 8G		12733 points
	Difference: 9209 (72%)

Zcash Mining Hash Rate

GeForce GTX 1080		553 Sol/s
Radeon R9 390 8G		326 Sol/s
	Difference: 227 (70%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
GeForce GTX 1080		20 Mh/s
	Difference: 8 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
Radeon R9 390 8G		275 Watts
	Difference: 95 Watts (53%)

Memory Bandwidth

The Radeon R9 390 8G, in theory, should perform a little bit faster than the GeForce GTX 1080 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
GeForce GTX 1080		327680 MB/sec
	Difference: 56320 (17%)

Texel Rate

The GeForce GTX 1080 will be much (about 61%) faster with regards to texture filtering than the Radeon R9 390 8G. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 390 8G		160000 Mtexels/sec
	Difference: 97120 (61%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 1080 is the winner, by a large margin. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 390 8G		64000 Mpixels/sec
	Difference: 38848 (61%)

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 (measured in MB per second) that can be transported 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 must be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at 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 the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.