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GeForce GTX 1080 vs Radeon R9 390X 8G

Intro

The GeForce GTX 1080 makes use of a 16 nm design. nVidia has set the core frequency at 1607 MHz. The GDDR5X RAM is set to run at a speed of 1251 MHz on this model. It features 2560 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Compare all of that to the Radeon R9 390X 8G, which comes with a clock speed of 1050 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 512-bit memory bus, and makes use of a 28 nm design. It is made up of 2816 SPUs, 176 TAUs, and 64 ROPs.

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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

Theoretically speaking, the Radeon R9 390X 8G should be a little bit faster than the GeForce GTX 1080 overall. (explain)

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

Texel Rate

The GeForce GTX 1080 should be quite a bit (more or less 39%) more effective at anisotropic filtering 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

The GeForce GTX 1080 is a lot (approximately 53%) more effective at anti-aliasing than the Radeon R9 390X 8G, and able to handle higher resolutions better. (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

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GeForce GTX 1080

Amazon.com

Check prices at:

Radeon R9 390X 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 390X 8G
Manufacturer nVidia AMD
Year May 2016 June 2015
Code Name GP104-400 Grenada XT
Memory 8192 MB 8192 MB
Core Speed 1607 MHz 1050 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 184800 Mtexels/sec
Pixel Rate 102848 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2560 2816
Texture Mapping Units 160 176
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: Bandwidth is the largest amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 1080

Amazon.com

Check prices at:

Radeon R9 390X 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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