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GeForce 9800 GT 1GB vs Radeon HD 3850 1GB

Intro

The GeForce 9800 GT 1GB uses a 65/55 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 memory works at a frequency of 900 MHz on this model. It features 112 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 3850 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 668 MHz. The GDDR3 RAM is set to run at a speed of 828 MHz on this specific model. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The GeForce 9800 GT 1GB, in theory, should perform a little bit faster than the Radeon HD 3850 1GB in general. (explain)

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

Texel Rate

The GeForce 9800 GT 1GB will be a lot (about 214%) faster with regards to texture filtering than the Radeon HD 3850 1GB. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3850 1GB is a better choice, but it probably won't make a huge difference. (explain)

Radeon HD 3850 1GB 10688 Mpixels/sec
GeForce 9800 GT 1GB 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 1GB

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 1GB Radeon HD 3850 1GB
Manufacturer nVidia AMD
Year July 2008 Nov 19, 2007
Code Name G92a/b RV670 PRO
Memory 1024 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: Bandwidth is the max amount of information (in units of MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 in one second. This number 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 1GB

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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