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Geforce GTX 680 vs Radeon RX 470

Intro

The Geforce GTX 680 comes with core clock speeds of 1006 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Compare all that to the Radeon RX 470, which comes with core clock speeds of 926 MHz on the GPU, and 1650 MHz on the 8192 MB of GDDR5 memory. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Geforce GTX 680 195 Watts
Difference: 75 Watts (63%)

Memory Bandwidth

The Radeon RX 470, in theory, should be a bit faster than the Geforce GTX 680 overall. (explain)

Radeon RX 470 211200 MB/sec
Geforce GTX 680 192256 MB/sec
Difference: 18944 (10%)

Texel Rate

The Geforce GTX 680 is a small bit (about 9%) more effective at AF than the Radeon RX 470. (explain)

Geforce GTX 680 128768 Mtexels/sec
Radeon RX 470 118528 Mtexels/sec
Difference: 10240 (9%)

Pixel Rate

The Geforce GTX 680 will be a bit (about 9%) better at full screen anti-aliasing than the Radeon RX 470, and should be capable of handling higher resolutions better. (explain)

Geforce GTX 680 32192 Mpixels/sec
Radeon RX 470 29632 Mpixels/sec
Difference: 2560 (9%)

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

Radeon RX 470

Amazon.com

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 RX 470
Manufacturer nVidia AMD
Year March 2012 August 2016
Code Name GK104 Polaris 10
Memory 2048 MB 8192 MB
Core Speed 1006 MHz 926 MHz
Memory Speed 6008 MHz 6600 MHz
Power (Max TDP) 195 watts 120 watts
Bandwidth 192256 MB/sec 211200 MB/sec
Texel Rate 128768 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 32192 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1536 2048
Texture Mapping Units 128 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 3540 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card 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 Render Output Units 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

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