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Geforce GTX 680 vs Radeon R9 390X 8G

Intro

The Geforce GTX 680 comes with a GPU core speed of 1006 MHz, and the 2048 MB of GDDR5 RAM is set to run at 1502 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

Compare that to the Radeon R9 390X 8G, which has GPU core speed of 1050 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also features 2816 SPUs, 176 Texture Address Units, 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 680 7650 points
Difference: 5905 (77%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G 32 Mh/s
Geforce GTX 680 16 Mh/s
Difference: 16 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680 195 Watts
Radeon R9 390X 8G 275 Watts
Difference: 80 Watts (41%)

Memory Bandwidth

Performance-wise, the Radeon R9 390X 8G should theoretically be quite a bit better than the Geforce GTX 680 overall. (explain)

Radeon R9 390X 8G 384000 MB/sec
Geforce GTX 680 192256 MB/sec
Difference: 191744 (100%)

Texel Rate

The Radeon R9 390X 8G will be a lot (more or less 44%) faster with regards to texture filtering than the Geforce GTX 680. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
Geforce GTX 680 128768 Mtexels/sec
Difference: 56032 (44%)

Pixel Rate

The Radeon R9 390X 8G is quite a bit (more or less 109%) more effective at FSAA than the Geforce GTX 680, and also will be able to handle higher screen resolutions better. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
Geforce GTX 680 32192 Mpixels/sec
Difference: 35008 (109%)

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 680

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 680 Radeon R9 390X 8G
Manufacturer nVidia AMD
Year March 2012 June 2015
Code Name GK104 Grenada XT
Memory 2048 MB 8192 MB
Core Speed 1006 MHz 1050 MHz
Memory Speed 6008 MHz 6000 MHz
Power (Max TDP) 195 watts 275 watts
Bandwidth 192256 MB/sec 384000 MB/sec
Texel Rate 128768 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 32192 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 1536 2816
Texture Mapping Units 128 176
Render Output Units 32 64
Bus Type GDDR5 GDDR5
Bus Width 256-bit 512-bit
Fab Process 28 nm 28 nm
Transistors 3540 million 6200 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially 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 680

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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