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GeForce 8800 GTS (G80) 320MB vs Radeon HD 4850 512MB
Intro
The GeForce 8800 GTS (G80) 320MB has a GPU clock speed of 513 MHz, and the 320 MB of GDDR3 memory runs at 792 MHz through a 320-bit bus. It also features 96 SPUs, 48 Texture Address Units, and 20 ROPs.Compare that to the Radeon HD 4850 512MB, which has core clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator 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
As far as performance goes, the Radeon HD 4850 512MB should in theory be a small bit better 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 is a small bit (more or less 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
The GeForce 8800 GTS (G80) 320MB will be just a bit (approximately 3%) more effective at full screen anti-aliasing than the Radeon HD 4850 512MB, and capable of handling 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 maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach 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.