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GeForce 9800 GT 512MB vs Radeon HD 3850 1GB

Intro

The GeForce 9800 GT 512MB features a GPU core speed of 600 MHz, and the 512 MB of GDDR3 RAM runs at 900 MHz through a 256-bit bus. It also features 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specs to the Radeon HD 3850 1GB, which features a GPU core clock speed of 668 MHz, and 1024 MB of GDDR3 RAM set to run at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 1GB 75 Watts
GeForce 9800 GT 512MB 105 Watts
Difference: 30 Watts (40%)

Memory Bandwidth

Theoretically, the GeForce 9800 GT 512MB should perform a bit faster than the Radeon HD 3850 1GB overall. (explain)

GeForce 9800 GT 512MB 57600 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 4608 (9%)

Texel Rate

The GeForce 9800 GT 512MB will be much (about 214%) more effective at anisotropic filtering than the Radeon HD 3850 1GB. (explain)

GeForce 9800 GT 512MB 33600 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 22912 (214%)

Pixel Rate

The Radeon HD 3850 1GB is a small bit (approximately 11%) more effective at anti-aliasing than the GeForce 9800 GT 512MB, and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 3850 1GB 10688 Mpixels/sec
GeForce 9800 GT 512MB 9600 Mpixels/sec
Difference: 1088 (11%)

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

Check prices at:

Radeon HD 3850 1GB

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 GT 512MB Radeon HD 3850 1GB
Manufacturer nVidia AMD
Year July 2008 Nov 19, 2007
Code Name G92a/b RV670 PRO
Memory 512 MB 1024 MB
Core Speed 600 MHz 668 MHz
Memory Speed 1800 MHz 1656 MHz
Power (Max TDP) 105 watts 75 watts
Bandwidth 57600 MB/sec 52992 MB/sec
Texel Rate 33600 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 112 320(64x5)
Texture Mapping Units 56 16
Render Output Units 16 16
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit
Fab Process 65/55 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 number of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 512MB

Amazon.com

Check prices at:

Radeon HD 3850 1GB

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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