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Geforce GTX 780 vs Radeon HD 5870


Intro

The Geforce GTX 780 features a GPU core speed of 863 MHz, and the 3072 MB of GDDR5 RAM runs at 1502 MHz through a 384-bit bus. It also is comprised of 2304 SPUs, 192 Texture Address Units, and 48 Raster Operation Units.

Compare all that to the Radeon HD 5870, which uses a 40 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM is set to run at a speed of 1200 MHz on this specific card. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
Geforce GTX 780 250 Watts
Difference: 62 Watts (33%)

Memory Bandwidth

In theory, the Geforce GTX 780 should be 88% faster than the Radeon HD 5870 in general, due to its greater bandwidth. (explain)

Geforce GTX 780 288384 MB/sec
Radeon HD 5870 153600 MB/sec
Difference: 134784 (88%)

Texel Rate

The Geforce GTX 780 should be much (more or less 144%) better at texture filtering than the Radeon HD 5870. (explain)

Geforce GTX 780 165696 Mtexels/sec
Radeon HD 5870 68000 Mtexels/sec
Difference: 97696 (144%)

Pixel Rate

The Geforce GTX 780 will be much (about 52%) better at FSAA than the Radeon HD 5870, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780 41424 Mpixels/sec
Radeon HD 5870 27200 Mpixels/sec
Difference: 14224 (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

Amazon.com

Radeon HD 5870

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 780 Radeon HD 5870
Manufacturer nVidia AMD
Year May 2013 September 23, 2009
Code Name GK110 Cypress XT
Memory 3072 MB 1024 MB
Core Speed 863 MHz 850 MHz
Memory Speed 6008 MHz 4800 MHz
Power (Max TDP) 250 watts 188 watts
Bandwidth 288384 MB/sec 153600 MB/sec
Texel Rate 165696 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 2304 1600(320x5)
Texture Mapping Units 192 80
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 7080 million 2154 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 can be processed per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at 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 that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Geforce GTX 780

Amazon.com

Radeon HD 5870

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.

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