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GeForce 8800 GT 512MB vs GeForce 9800 GT 512MB
Intro
The GeForce 8800 GT 512MB has a clock frequency of 600 MHz and a GDDR3 memory speed of 900 MHz. It also features a 256-bit bus, and uses a 65 nm design. It features 112 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.Compare those specifications to the GeForce 9800 GT 512MB, which features a core clock speed of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and uses a 65/55 nm design. It is made up of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Both cards have the exact same memory bandwidth, so theoretically they should have identical performance. (explain)
Texel Rate
Both cards have the exact same texel fill rate, so in theory they should perform equally good at at AF. (explain)Pixel Rate
Both cards have exactly the same pixel fill rate, so theoretically they should perform equally good at at AA, and be able to handle the same screen resolutions. (explain)
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
GeForce 8800 GT 512MBAmazon.com
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GeForce 9800 GT 512MBAmazon.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
| Model | GeForce 8800 GT 512MB | GeForce 9800 GT 512MB |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | Oct 2007 | July 2008 |
| Code Name | G92 | G92a/b |
| Memory | 512 MB | 512 MB |
| Core Speed | 600 MHz | 600 MHz |
| Memory Speed | 1800 MHz | 1800 MHz |
| Power (Max TDP) | 105 watts | 105 watts |
| Bandwidth | 57600 MB/sec | 57600 MB/sec |
| Texel Rate | 33600 Mtexels/sec | 33600 Mtexels/sec |
| Pixel Rate | 9600 Mpixels/sec | 9600 Mpixels/sec |
| Unified Shaders | 112 | 112 |
| Texture Mapping Units | 56 | 56 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 65 nm | 65/55 nm |
| Transistors | 754 million | 754 million |
| Bus | PCIe x16 2.0 | PCIe x16 2.0 |
| DirectX Version | DirectX 10 | DirectX 10 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
GeForce 8800 GT 512MBAmazon.com
Check prices at:
|
GeForce 9800 GT 512MBAmazon.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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