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GeForce 8800 GT 1GB vs Radeon HD 4770
Intro
The GeForce 8800 GT 1GB comes with a core clock speed of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 256-bit memory bus, and uses a 65 nm design. It is comprised of 112 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.Compare all that to the Radeon HD 4770, which features core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4770 |
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80 Watts |
| GeForce 8800 GT 1GB |
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105 Watts |
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Memory Bandwidth
As far as performance goes, the GeForce 8800 GT 1GB should theoretically be a little bit superior to the Radeon HD 4770 overall. (explain)
| GeForce 8800 GT 1GB |
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57600 MB/sec |
| Radeon HD 4770 |
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51200 MB/sec |
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Texel Rate
The GeForce 8800 GT 1GB is much (about 40%) better at anisotropic filtering than the Radeon HD 4770. (explain)| GeForce 8800 GT 1GB |
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33600 Mtexels/sec |
| Radeon HD 4770 |
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24000 Mtexels/sec |
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Pixel Rate
If running with a high resolution is important to you, then the Radeon HD 4770 is the winner, by a large margin. (explain)| Radeon HD 4770 |
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12000 Mpixels/sec |
| GeForce 8800 GT 1GB |
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9600 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 GT 1GBAmazon.com
Check prices at:
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Radeon HD 4770Amazon.com
Check prices at:
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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 1GB | Radeon HD 4770 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | Dec 2007 | Apr 28, 2009 |
| Code Name | G92 | RV740 |
| Memory | 1024 MB | 512 MB |
| Core Speed | 600 MHz | 750 MHz |
| Memory Speed | 1800 MHz | 3200 MHz |
| Power (Max TDP) | 105 watts | 80 watts |
| Bandwidth | 57600 MB/sec | 51200 MB/sec |
| Texel Rate | 33600 Mtexels/sec | 24000 Mtexels/sec |
| Pixel Rate | 9600 Mpixels/sec | 12000 Mpixels/sec |
| Unified Shaders | 112 | 640(128x5) |
| Texture Mapping Units | 56 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 65 nm | 40 nm |
| Transistors | 754 million | 826 million |
| Bus | PCIe x16 2.0 | 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 moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
GeForce 8800 GT 1GBAmazon.com
Check prices at:
|
Radeon HD 4770Amazon.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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