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GeForce GTX 780 Ti vs Radeon R9 390X 8G

Intro

The GeForce GTX 780 Ti has a clock speed of 875 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It is comprised of 2880 SPUs, 240 TAUs, and 48 ROPs.

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

As far as performance goes, the Radeon R9 390X 8G should theoretically be a small bit superior to the GeForce GTX 780 Ti overall. (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 just a bit (more or less 14%) better 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 using lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by a large margin. (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

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 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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability 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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