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GeForce GTX 1080 vs Radeon R9 390 8G

Intro

The GeForce GTX 1080 has a core clock speed of 1607 MHz and a GDDR5X memory speed of 1251 MHz. It also features a 256-bit bus, and uses a 16 nm design. It is made up of 2560 SPUs, 160 Texture Address Units, and 64 ROPs.

Compare those specs to the Radeon R9 390 8G, which comes with core speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

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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 should theoretically perform a small 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 is much (approximately 61%) better at AF 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

The GeForce GTX 1080 will be quite a bit (about 61%) more effective at FSAA than the Radeon R9 390 8G, and should be capable of handling higher screen resolutions more effectively. (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

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GeForce GTX 1080

Amazon.com

Check prices at:

Radeon R9 390 8G

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 1080 Radeon R9 390 8G
Manufacturer nVidia AMD
Year May 2016 June 2015
Code Name GP104-400 Grenada PRO
Memory 8192 MB 8192 MB
Core Speed 1607 MHz 1000 MHz
Memory Speed 10008 MHz 6000 MHz
Power (Max TDP) 180 watts 275 watts
Bandwidth 327680 MB/sec 384000 MB/sec
Texel Rate 257120 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 2560 2560
Texture Mapping Units 160 160
Render Output Units 64 64
Bus Type GDDR5X GDDR5
Bus Width 256-bit 512-bit
Fab Process 16 nm 28 nm
Transistors 7200 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 1080

Amazon.com

Check prices at:

Radeon R9 390 8G

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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