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Geforce GTX 780 vs Radeon R9 390 8G

Intro

The Geforce GTX 780 uses a 28 nm design. nVidia has set the core frequency at 863 MHz. The GDDR5 memory works at a speed of 1502 MHz on this particular card. It features 2304 SPUs as well as 192 Texture Address Units and 48 ROPs.

Compare all that to the Radeon R9 390 8G, which has a clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 512-bit bus, and uses a 28 nm design. It features 2560 SPUs, 160 Texture Address Units, 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

Radeon R9 390 8G 12733 points
Geforce GTX 780 10082 points
Difference: 2651 (26%)

Ethereum Mining Hash Rate

Radeon R9 390 8G 28 Mh/s
Geforce GTX 780 20 Mh/s
Difference: 8 (40%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

As far as performance goes, the Radeon R9 390 8G should theoretically be quite a bit superior to the Geforce GTX 780 overall. (explain)

Radeon R9 390 8G 384000 MB/sec
Geforce GTX 780 288384 MB/sec
Difference: 95616 (33%)

Texel Rate

The Geforce GTX 780 is just a bit (approximately 4%) more effective at anisotropic filtering than the Radeon R9 390 8G. (explain)

Geforce GTX 780 165696 Mtexels/sec
Radeon R9 390 8G 160000 Mtexels/sec
Difference: 5696 (4%)

Pixel Rate

The Radeon R9 390 8G is much (about 54%) more effective at FSAA than the Geforce GTX 780, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 390 8G 64000 Mpixels/sec
Geforce GTX 780 41424 Mpixels/sec
Difference: 22576 (54%)

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

Amazon.com

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Radeon R9 390 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 Radeon R9 390 8G
Manufacturer nVidia AMD
Year May 2013 June 2015
Code Name GK110 Grenada PRO
Memory 3072 MB 8192 MB
Core Speed 863 MHz 1000 MHz
Memory Speed 6008 MHz 6000 MHz
Power (Max TDP) 250 watts 275 watts
Bandwidth 288384 MB/sec 384000 MB/sec
Texel Rate 165696 Mtexels/sec 160000 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 64000 Mpixels/sec
Unified Shaders 2304 2560
Texture Mapping Units 192 160
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 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video 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 amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Geforce GTX 780

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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