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GeForce 8600 GT 1GB GDDR3 vs GeForce 8600 GT 512MB GDDR3
Intro
The GeForce 8600 GT 1GB GDDR3 uses a 80 nm design. nVidia has set the core speed at 540 MHz. The GDDR3 RAM is set to run at a speed of 700 MHz on this specific model. It features 32 SPUs as well as 16 TAUs and 8 ROPs.Compare those specs to the GeForce 8600 GT 512MB GDDR3, which comes with a GPU core clock speed of 540 MHz, and 512 MB of GDDR3 RAM set to run at 700 MHz through a 128-bit bus. It also features 32 SPUs, 16 Texture Address Units, and 8 ROPs.
Power Usage and Theoretical Benchmarks
Both cards have the same power consumption.Memory Bandwidth
Both cards have exactly the same memory bandwidth, so theoretically they should have the same performance. (explain)
Texel Rate
Both cards have the exact same texel rate, so in theory they should perform equally good at at AF. (explain)Pixel Rate
Both cards have the exact same pixel fill rate, so theoretically they should perform equally good at at anti-aliasing, and be capable of handling the same 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 8600 GT 1GB GDDR3Amazon.com
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GeForce 8600 GT 512MB GDDR3Amazon.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 8600 GT 1GB GDDR3 | GeForce 8600 GT 512MB GDDR3 |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | April 2007 | April 2007 |
| Code Name | G84 | G84 |
| Memory | 1024 MB | 512 MB |
| Core Speed | 540 MHz | 540 MHz |
| Memory Speed | 1400 MHz | 1400 MHz |
| Power (Max TDP) | 47 watts | 47 watts |
| Bandwidth | 22400 MB/sec | 22400 MB/sec |
| Texel Rate | 8640 Mtexels/sec | 8640 Mtexels/sec |
| Pixel Rate | 4320 Mpixels/sec | 4320 Mpixels/sec |
| Unified Shaders | 32 | 32 |
| Texture Mapping Units | 16 | 16 |
| Render Output Units | 8 | 8 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 80 nm | 80 nm |
| Transistors | 289 million | 289 million |
| Bus | PCIe x16 | PCIe x16 |
| DirectX Version | DirectX 10 | DirectX 10 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the 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 amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce 8600 GT 1GB GDDR3Amazon.com
Check prices at:
|
GeForce 8600 GT 512MB GDDR3Amazon.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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