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GeForce 8800 GTS (G80) 320MB vs Radeon HD 4850 512MB
Intro
The GeForce 8800 GTS (G80) 320MB features core clock speeds of 513 MHz on the GPU, and 792 MHz on the 320 MB of GDDR3 RAM. It features 96 SPUs as well as 48 TAUs and 20 ROPs.Compare those specifications to the Radeon HD 4850 512MB, which features GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM running at 993 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.
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
In theory, the Radeon HD 4850 512MB should perform a little bit faster than the GeForce 8800 GTS (G80) 320MB in general. (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 should be just a bit (approximately 2%) more effective at 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
If running with lots of anti-aliasing is important to you, then the GeForce 8800 GTS (G80) 320MB is the winner, not by a very large margin though. (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 largest amount of information (measured in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per 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. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum 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.