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GeForce GTX 780 Ti vs Radeon R9 390X 8G

Intro

The GeForce GTX 780 Ti uses a 28 nm design. nVidia has set the core speed at 875 MHz. The GDDR5 RAM is set to run at a frequency of 1750 MHz on this particular card. It features 2880 SPUs along with 240 Texture Address Units and 48 ROPs.

Compare all that to the Radeon R9 390X 8G, which makes use of a 28 nm design. AMD has set the core speed at 1050 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this specific model. It features 2816 SPUs along with 176 Texture Address Units 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

Radeon R9 390X 8G 13555 points
GeForce GTX 780 Ti 10900 points
Difference: 2655 (24%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
GeForce GTX 780 Ti 19 Mh/s
Difference: 13 (68%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti 250 Watts
Radeon R9 390X 8G 275 Watts
Difference: 25 Watts (10%)

Memory Bandwidth

The Radeon R9 390X 8G should in theory be a small bit faster than the GeForce GTX 780 Ti in general. (explain)

Radeon R9 390X 8G 384000 MB/sec
GeForce GTX 780 Ti 336000 MB/sec
Difference: 48000 (14%)

Texel Rate

The GeForce GTX 780 Ti will be a bit (about 14%) more effective at AF than the Radeon R9 390X 8G. (explain)

GeForce GTX 780 Ti 210000 Mtexels/sec
Radeon R9 390X 8G 184800 Mtexels/sec
Difference: 25200 (14%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is superior to the GeForce GTX 780 Ti, by far. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 25200 (60%)

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 780 Ti

Amazon.com

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Radeon R9 390X 8G

Amazon.com

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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 780 Ti Radeon R9 390X 8G
Manufacturer nVidia AMD
Year November 2013 June 2015
Code Name GK110 Grenada XT
Memory 3072 MB 8192 MB
Core Speed 875 MHz 1050 MHz
Memory Speed 7000 MHz 6000 MHz
Power (Max TDP) 250 watts 275 watts
Bandwidth 336000 MB/sec 384000 MB/sec
Texel Rate 210000 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 2880 2816
Texture Mapping Units 240 176
Render Output Units 48 64
Bus Type GDDR5 GDDR5
Bus Width 384-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 7080 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.4 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

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GeForce GTX 780 Ti

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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