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GeForce GTX 260 vs Radeon HD 4870 1GB
Intro
The GeForce GTX 260 comes with a GPU core speed of 576 MHz, and the 896 MB of GDDR3 RAM runs at 999 MHz through a 448-bit bus. It also is made up of 192 Stream Processors, 64 Texture Address Units, and 28 ROPs.Compare all that to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR5 RAM is set to run at a frequency of 900 MHz on this card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 1GB |
|
150 Watts |
| GeForce GTX 260 |
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182 Watts |
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Memory Bandwidth
The Radeon HD 4870 1GB should theoretically perform a little bit faster than the GeForce GTX 260 overall. (explain)
| Radeon HD 4870 1GB |
|
115200 MB/sec |
| GeForce GTX 260 |
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111888 MB/sec |
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Texel Rate
The GeForce GTX 260 is much (about 23%) more effective at anisotropic filtering than the Radeon HD 4870 1GB. (explain)| GeForce GTX 260 |
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36864 Mtexels/sec |
| Radeon HD 4870 1GB |
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30000 Mtexels/sec |
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Pixel Rate
The GeForce GTX 260 will be much (more or less 34%) better at anti-aliasing than the Radeon HD 4870 1GB, and also will be able to handle higher resolutions without losing too much performance. (explain)| GeForce GTX 260 |
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16128 Mpixels/sec |
| Radeon HD 4870 1GB |
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12000 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 GTX 260Amazon.com
Check prices at:
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Radeon HD 4870 1GBAmazon.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 GTX 260 | Radeon HD 4870 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | June 16, 2008 | Jun 25, 2008 |
| Code Name | G200 | RV770 XT |
| Memory | 896 MB | 1024 MB |
| Core Speed | 576 MHz | 750 MHz |
| Memory Speed | 1998 MHz | 3600 MHz |
| Power (Max TDP) | 182 watts | 150 watts |
| Bandwidth | 111888 MB/sec | 115200 MB/sec |
| Texel Rate | 36864 Mtexels/sec | 30000 Mtexels/sec |
| Pixel Rate | 16128 Mpixels/sec | 12000 Mpixels/sec |
| Unified Shaders | 192 | 800(160x5) |
| Texture Mapping Units | 64 | 40 |
| Render Output Units | 28 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 448-bit | 256-bit |
| Fab Process | 65 nm | 55 nm |
| Transistors | 1400 million | 956 million |
| Bus | PCIe x16 2.0 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 are processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
GeForce GTX 260Amazon.com
Check prices at:
|
Radeon HD 4870 1GBAmazon.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
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