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GeForce GTX 780 Ti vs Radeon R9 390 8G

Intro

The GeForce GTX 780 Ti has clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 RAM. It features 2880 SPUs as well as 240 Texture Address Units and 48 Rasterization Operator Units.

Compare all that to the Radeon R9 390 8G, which has 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 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 390 8G 12733 points
GeForce GTX 780 Ti 10900 points
Difference: 1833 (17%)

Ethereum Mining Hash Rate

Radeon R9 390 8G 28 Mh/s
GeForce GTX 780 Ti 19 Mh/s
Difference: 9 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the Radeon R9 390 8G should be just a bit faster than the GeForce GTX 780 Ti in general. (explain)

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

Texel Rate

The GeForce GTX 780 Ti is much (approximately 31%) better at anisotropic filtering than the Radeon R9 390 8G. (explain)

GeForce GTX 780 Ti 210000 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 50000 (31%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 390 8G is the winner, by far. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
GeForce GTX 780 Ti 42000 Mpixels/sec
Difference: 22000 (52%)

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

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 780 Ti Radeon R9 390 8G
Manufacturer nVidia AMD
Year November 2013 June 2015
Code Name GK110 Grenada PRO
Memory 3072 MB 8192 MB
Core Speed 875 MHz 1000 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 160000 Mtexels/sec
Pixel Rate 42000 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 2880 2560
Texture Mapping Units 240 160
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 maximum amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially 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 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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