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GeForce 9800 GX2 vs Radeon HD 6850
Intro
The GeForce 9800 GX2 features a clock frequency of 600 MHz and a GDDR3 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and uses a 65 nm design. It is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.Compare those specifications to the Radeon HD 6850, which uses a 40 nm design. ATi has set the core speed at 775 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this card. It features 960 SPUs as well as 48 Texture Address Units and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6850 |
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127 Watts |
| GeForce 9800 GX2 |
|
197 Watts |
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Memory Bandwidth
Both cards have the exact same bandwidth, so theoretically they should perform exactly the same. (explain)
Texel Rate
The GeForce 9800 GX2 will be quite a bit (approximately 106%) faster with regards to texture filtering than the Radeon HD 6850. (explain)| GeForce 9800 GX2 |
|
76800 Mtexels/sec |
| Radeon HD 6850 |
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37200 Mtexels/sec |
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Pixel Rate
The Radeon HD 6850 is a lot (about 29%) faster with regards to FSAA than the GeForce 9800 GX2, and also will be capable of handling higher resolutions more effectively. (explain)| Radeon HD 6850 |
|
24800 Mpixels/sec |
| GeForce 9800 GX2 |
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19200 Mpixels/sec |
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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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Price Comparison
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce 9800 GX2Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6850Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce 9800 GX2 | Radeon HD 6850 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | Mar 2008 | October 2010 |
| Code Name | G92 | Barts Pro |
| Fab Process | 65 nm | 40 nm |
| Bus | PCIe x16 2.0 | PCIe x16 |
| Memory | 512 MB (x2) | 1024 MB |
| Core Speed | 600 MHz (x2) | 775 MHz |
| Shader Speed | 1500 MHz (x2) | (N/A) MHz |
| Memory Speed | 1000 MHz (x2) | 1000 MHz |
| Unified Shaders | 128 (x2) | 960 |
| Texture Mapping Units | 64 (x2) | 48 |
| Render Output Units | 16 (x2) | 32 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit (x2) | 256-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
| Power (Max TDP) | 197 watts | 127 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 128000 MB/sec | 128000 MB/sec |
| Texel Rate | 76800 Mtexels/sec | 37200 Mtexels/sec |
| Pixel Rate | 19200 Mpixels/sec | 24800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Comments
One Response to “GeForce 9800 GX2 vs Radeon HD 6850”Hi, i was wanting to know, if you guys from the website can tell me the HD6850 it's a good graphic card ?