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GeForce 8800 GTS (G80) 320MB vs Radeon HD 4850 512MB
Intro
The GeForce 8800 GTS (G80) 320MB makes use of a 90 nm design. nVidia has set the core speed at 513 MHz. The GDDR3 RAM runs at a frequency of 792 MHz on this specific model. It features 96 SPUs as well as 48 Texture Address Units and 20 Rasterization Operator Units.Compare all of that to the Radeon HD 4850 512MB, which features a core clock frequency of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4850 512MB |
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110 Watts |
| GeForce 8800 GTS (G80) 320MB |
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143 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 4850 512MB is 0% faster than the GeForce 8800 GTS (G80) 320MB in general, because of its higher bandwidth. (explain)
| Radeon HD 4850 512MB |
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63552 MB/sec |
| GeForce 8800 GTS (G80) 320MB |
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63360 MB/sec |
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Texel Rate
The Radeon HD 4850 512MB will be just a bit (more or less 2%) faster with regards to anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)| Radeon HD 4850 512MB |
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25000 Mtexels/sec |
| GeForce 8800 GTS (G80) 320MB |
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24624 Mtexels/sec |
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Pixel Rate
The GeForce 8800 GTS (G80) 320MB is a small bit (approximately 3%) better at FSAA than the Radeon HD 4850 512MB, and will be able to handle higher resolutions more effectively. (explain)| GeForce 8800 GTS (G80) 320MB |
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10260 Mpixels/sec |
| Radeon HD 4850 512MB |
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10000 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.
Price Comparison
GeForce 8800 GTS (G80) 320MBAmazon.com
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Radeon HD 4850 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 GTS (G80) 320MB | Radeon HD 4850 512MB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | Feb 2007 | Jun 25, 2008 |
| Code Name | G80 | RV770 PRO |
| Memory | 320 MB | 512 MB |
| Core Speed | 513 MHz | 625 MHz |
| Memory Speed | 1584 MHz | 1986 MHz |
| Power (Max TDP) | 143 watts | 110 watts |
| Bandwidth | 63360 MB/sec | 63552 MB/sec |
| Texel Rate | 24624 Mtexels/sec | 25000 Mtexels/sec |
| Pixel Rate | 10260 Mpixels/sec | 10000 Mpixels/sec |
| Unified Shaders | 96 | 800(160x5) |
| Texture Mapping Units | 48 | 40 |
| Render Output Units | 20 | 16 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 320-bit | 256-bit |
| Fab Process | 90 nm | 55 nm |
| Transistors | 681 million | 956 million |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.
GeForce 8800 GTS (G80) 320MBAmazon.com
Check prices at:
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Radeon HD 4850 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.
|
Comments
One Response to “GeForce 8800 GTS (G80) 320MB vs Radeon HD 4850 512MB”I like how all of your tests are done in the highest possible resolution. Because the lower physical memory of the 8800 gts couldn't possibly bottleneck it at those resolutions. The results on a lower resolution where the cards are more equally matched would be better suited.