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GeForce GTX 280 vs Radeon HD 7850

Intro

The GeForce GTX 280 features a GPU core speed of 602 MHz, and the 1024 MB of GDDR3 memory is set to run at 1107 MHz through a 512-bit bus. It also is comprised of 240 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Compare all that to the Radeon HD 7850, which has a clock speed of 860 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It features 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
GeForce GTX 280 236 Watts
Difference: 106 Watts (82%)

Memory Bandwidth

In theory, the Radeon HD 7850 should perform a bit faster than the GeForce GTX 280 overall. (explain)

Radeon HD 7850 153600 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 11904 (8%)

Texel Rate

The Radeon HD 7850 should be just a bit (about 14%) faster with regards to anisotropic filtering than the GeForce GTX 280. (explain)

Radeon HD 7850 55040 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 6880 (14%)

Pixel Rate

The Radeon HD 7850 should be much (more or less 43%) more effective at anti-aliasing than the GeForce GTX 280, and should be able to handle higher screen resolutions more effectively. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 8256 (43%)

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 280

Amazon.com

Check prices at:

Radeon HD 7850

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.

Specifications

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Model GeForce GTX 280 Radeon HD 7850
Manufacturer nVidia AMD
Year June 17, 2008 March 2012
Code Name G200 Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 602 MHz 860 MHz
Memory Speed 2214 MHz 4800 MHz
Power (Max TDP) 236 watts 130 watts
Bandwidth 141696 MB/sec 153600 MB/sec
Texel Rate 48160 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 240 1024
Texture Mapping Units 80 64
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 65 nm 28 nm
Transistors 1400 million 2800 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 280

Amazon.com

Check prices at:

Radeon HD 7850

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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