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GeForce GTX 260 vs Radeon HD 4870 1GB
Intro
The GeForce GTX 260 features a GPU clock speed of 576 MHz, and the 896 MB of GDDR3 memory runs at 999 MHz through a 448-bit bus. It also features 192 Stream Processors, 64 Texture Address Units, and 28 Raster Operation Units.Compare all of that to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM works at a speed of 900 MHz on this model. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.
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 be just a bit faster than the GeForce GTX 260 in general. (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 will be a lot (about 23%) faster with regards to AF 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 is quite a bit (approximately 34%) faster with regards to anti-aliasing than the Radeon HD 4870 1GB, and should be capable of handling higher resolutions without slowing down too much. (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:
|
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 information (counted in MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses 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 number of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to 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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