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GeForce 9800 GT 512MB vs Radeon HD 5830

Intro

The GeForce 9800 GT 512MB features a clock speed of 600 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 65/55 nm design. It features 112 SPUs, 56 TAUs, and 16 ROPs.

Compare that to the Radeon HD 5830, which uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this card. It features 1120(224x5) SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 512MB 105 Watts
Radeon HD 5830 175 Watts
Difference: 70 Watts (67%)

Memory Bandwidth

In theory, the Radeon HD 5830 will be 122% faster than the GeForce 9800 GT 512MB in general, because of its higher bandwidth. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 9800 GT 512MB 57600 MB/sec
Difference: 70400 (122%)

Texel Rate

The Radeon HD 5830 is a lot (approximately 33%) faster with regards to AF than the GeForce 9800 GT 512MB. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 9800 GT 512MB 33600 Mtexels/sec
Difference: 11200 (33%)

Pixel Rate

The Radeon HD 5830 is much (more or less 33%) faster with regards to full screen anti-aliasing than the GeForce 9800 GT 512MB, and should be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce 9800 GT 512MB 9600 Mpixels/sec
Difference: 3200 (33%)

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 9800 GT 512MB

Amazon.com

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Radeon HD 5830

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 9800 GT 512MB Radeon HD 5830
Manufacturer nVidia AMD
Year July 2008 February 25, 2010
Code Name G92a/b Cypress LE
Memory 512 MB 1024 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 105 watts 175 watts
Bandwidth 57600 MB/sec 128000 MB/sec
Texel Rate 33600 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 112 1120(224x5)
Texture Mapping Units 56 56
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 65/55 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 max amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 9800 GT 512MB

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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