GeForce GTX 1080 vs Radeon R9 390X 8G

Intro

Compare those specifications to the Radeon R9 390X 8G, which uses a 28 nm design. AMD has set the core frequency at 1050 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this specific model. It features 2816 SPUs as well as 176 Texture Address Units 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 390X 8G		13555 points
	Difference: 8387 (62%)

Zcash Mining Hash Rate

GeForce GTX 1080		553 Sol/s
Radeon R9 390X 8G		330 Sol/s
	Difference: 223 (68%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
GeForce GTX 1080		20 Mh/s
	Difference: 12 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The GeForce GTX 1080 is a lot (more or less 39%) more effective at AF than the Radeon R9 390X 8G. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 390X 8G		184800 Mtexels/sec
	Difference: 72320 (39%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 1080 is superior to the Radeon R9 390X 8G, by far. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 390X 8G		67200 Mpixels/sec
	Difference: 35648 (53%)

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 max amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the 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 can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.