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Radeon HD 3870 X2 1GB vs Radeon HD 6570 (OEM) 2GB
Intro
The Radeon HD 3870 X2 1GB makes use of a 55 nm design. AMD has set the core speed at 825 MHz. The GDDR4 memory works at a speed of 1126 MHz on this specific model. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.Compare all that to the Radeon HD 6570 (OEM) 2GB, which has a core clock frequency of 650 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 24 TAUs, and 8 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Performance-wise, the Radeon HD 3870 X2 1GB should in theory be much superior to the Radeon HD 6570 (OEM) 2GB overall. (explain)
| Radeon HD 3870 X2 1GB |
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144128 MB/sec |
| Radeon HD 6570 (OEM) 2GB |
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64000 MB/sec |
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Texel Rate
The Radeon HD 3870 X2 1GB is quite a bit (about 69%) faster with regards to anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)| Radeon HD 3870 X2 1GB |
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26400 Mtexels/sec |
| Radeon HD 6570 (OEM) 2GB |
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15600 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon HD 3870 X2 1GB is superior to the Radeon HD 6570 (OEM) 2GB, and very much so. (explain)| Radeon HD 3870 X2 1GB |
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26400 Mpixels/sec |
| Radeon HD 6570 (OEM) 2GB |
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5200 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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Price Comparison
Radeon HD 3870 X2 1GBAmazon.com
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Radeon HD 6570 (OEM) 2GBAmazon.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 | Radeon HD 3870 X2 1GB | Radeon HD 6570 (OEM) 2GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jan 28, 2008 | February 2011 |
| Code Name | R680 | Turks |
| Memory | 1024 MB (x2) | 1024 MB |
| Core Speed | 825 MHz (x2) | 650 MHz |
| Memory Speed | 2252 MHz (x2) | 4000 MHz |
| Power (Max TDP) | (Unknown) watts | 50 watts |
| Bandwidth | 144128 MB/sec | 64000 MB/sec |
| Texel Rate | 26400 Mtexels/sec | 15600 Mtexels/sec |
| Pixel Rate | 26400 Mpixels/sec | 5200 Mpixels/sec |
| Unified Shaders | 320(64x5) (x2) | 480 |
| Texture Mapping Units | 16 (x2) | 24 |
| Render Output Units | 16 (x2) | 8 |
| Bus Type | GDDR4 | GDDR5 |
| Bus Width | 256-bit (x2) | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | (Unknown) million | 715 million |
| Bus | PCIe 2.0 x16/(internal PCIe 1.1 x16) | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the 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 card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core 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 per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core 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 is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 3870 X2 1GBAmazon.com
Check prices at:
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Radeon HD 6570 (OEM) 2GBAmazon.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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