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Geforce GTX 780 vs Radeon HD 5850

Intro

The Geforce GTX 780 features core speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 memory. It features 2304 SPUs along with 192 TAUs and 48 Rasterization Operator Units.

Compare all of that to the Radeon HD 5850, which features a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 1440(288x5) SPUs, 72 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5850 151 Watts
Geforce GTX 780 250 Watts
Difference: 99 Watts (66%)

Memory Bandwidth

Performance-wise, the Geforce GTX 780 should in theory be a lot better than the Radeon HD 5850 in general. (explain)

Geforce GTX 780 288384 MB/sec
Radeon HD 5850 128000 MB/sec
Difference: 160384 (125%)

Texel Rate

The Geforce GTX 780 should be much (approximately 217%) better at AF than the Radeon HD 5850. (explain)

Geforce GTX 780 165696 Mtexels/sec
Radeon HD 5850 52200 Mtexels/sec
Difference: 113496 (217%)

Pixel Rate

The Geforce GTX 780 should be quite a bit (about 79%) more effective at FSAA than the Radeon HD 5850, and capable of handling higher resolutions more effectively. (explain)

Geforce GTX 780 41424 Mpixels/sec
Radeon HD 5850 23200 Mpixels/sec
Difference: 18224 (79%)

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 HD 5850

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 HD 5850
Manufacturer nVidia AMD
Year May 2013 September 30, 2009
Code Name GK110 Cypress PRO
Memory 3072 MB 1024 MB
Core Speed 863 MHz 725 MHz
Memory Speed 6008 MHz 4000 MHz
Power (Max TDP) 250 watts 151 watts
Bandwidth 288384 MB/sec 128000 MB/sec
Texel Rate 165696 Mtexels/sec 52200 Mtexels/sec
Pixel Rate 41424 Mpixels/sec 23200 Mpixels/sec
Unified Shaders 2304 1440(288x5)
Texture Mapping Units 192 72
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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card 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 per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Geforce GTX 780

Amazon.com

Check prices at:

Radeon HD 5850

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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