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GeForce 9800 GTX vs Radeon HD 5830

Intro

The GeForce 9800 GTX comes with clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

Compare all that to the Radeon HD 5830, which comes with a clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 1120(224x5) SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX 140 Watts
Radeon HD 5830 175 Watts
Difference: 35 Watts (25%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should theoretically be a lot better than the GeForce 9800 GTX in general. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 9800 GTX 70400 MB/sec
Difference: 57600 (82%)

Texel Rate

The Radeon HD 5830 should be a little bit (about 4%) more effective at AF than the GeForce 9800 GTX. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 9800 GTX 43200 Mtexels/sec
Difference: 1600 (4%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5830 is the winner, though not by far. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 2000 (19%)

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

Display Prices

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GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 5830

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 9800 GTX Radeon HD 5830
Manufacturer nVidia AMD
Year April 2008 February 25, 2010
Code Name G92 Cypress LE
Memory 512 MB 1024 MB
Core Speed 675 MHz 800 MHz
Memory Speed 2200 MHz 4000 MHz
Power (Max TDP) 140 watts 175 watts
Bandwidth 70400 MB/sec 128000 MB/sec
Texel Rate 43200 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 128 1120(224x5)
Texture Mapping Units 64 56
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 754 million 2154 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 potential to reach the max fill rate.

Display Prices

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GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 5830

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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