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Radeon HD 3870 512MB vs Radeon HD 6570 (OEM) 2GB
Intro
The Radeon HD 3870 512MB comes with a clock speed of 775 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.Compare all of that to the Radeon HD 6570 (OEM) 2GB, which has a GPU core clock speed of 650 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 TAUs, and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6570 (OEM) 2GB |
|
50 Watts |
| Radeon HD 3870 512MB |
|
106 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 6570 (OEM) 2GB should in theory be a bit better than the Radeon HD 3870 512MB in general. (explain)
| Radeon HD 6570 (OEM) 2GB |
|
64000 MB/sec |
| Radeon HD 3870 512MB |
|
57600 MB/sec |
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Texel Rate
The Radeon HD 6570 (OEM) 2GB should be a lot (approximately 26%) faster with regards to anisotropic filtering than the Radeon HD 3870 512MB. (explain)| Radeon HD 6570 (OEM) 2GB |
|
15600 Mtexels/sec |
| Radeon HD 3870 512MB |
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12400 Mtexels/sec |
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Pixel Rate
The Radeon HD 3870 512MB will be a lot (about 138%) faster with regards to anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and able to handle higher screen resolutions better. (explain)| Radeon HD 3870 512MB |
|
12400 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.
Price Comparison
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
Radeon HD 3870 512MBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6570 (OEM) 2GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model | Radeon HD 3870 512MB | Radeon HD 6570 (OEM) 2GB |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | Nov 19, 2007 | February 2011 |
| Code Name | RV670 XT | Turks |
| Fab Process | 55 nm | 40 nm |
| Bus | PCIe 2.0 x16/AGP 8x | PCIe 2.1 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 775 MHz | 650 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 900 MHz | 1000 MHz |
| Unified Shaders | 320(64x5) | 480 |
| Texture Mapping Units | 16 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
| Power (Max TDP) | 106 watts | 50 watts |
| Shader Model | 4.1 | 5.0 |
| Bandwidth | 57600 MB/sec | 64000 MB/sec |
| Texel Rate | 12400 Mtexels/sec | 15600 Mtexels/sec |
| Pixel Rate | 12400 Mpixels/sec | 5200 Mpixels/sec |
Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better 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 number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.
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