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Radeon HD 4850 X2 512MB vs Radeon HD 6570 (OEM) 2GB
Intro
The Radeon HD 4850 X2 512MB has core clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.Compare those specs to the Radeon HD 6570 (OEM) 2GB, which uses a 40 nm design. ATi has set the core frequency at 650 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular card. It features 480 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6570 (OEM) 2GB |
|
50 Watts |
| Radeon HD 4850 X2 512MB |
|
250 Watts |
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Memory Bandwidth
The Radeon HD 4850 X2 512MB should in theory perform much faster than the Radeon HD 6570 (OEM) 2GB in general. (explain)
| Radeon HD 4850 X2 512MB |
|
127104 MB/sec |
| Radeon HD 6570 (OEM) 2GB |
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64000 MB/sec |
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Texel Rate
The Radeon HD 4850 X2 512MB is a lot (more or less 221%) faster with regards to texture filtering than the Radeon HD 6570 (OEM) 2GB. (explain)| Radeon HD 4850 X2 512MB |
|
50000 Mtexels/sec |
| Radeon HD 6570 (OEM) 2GB |
|
15600 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 4850 X2 512MB is a better choice, and very much so. (explain)| Radeon HD 4850 X2 512MB |
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20000 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
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 4850 X2 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 4850 X2 512MB | Radeon HD 6570 (OEM) 2GB |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | Nov 7, 2008 | February 2011 |
| Code Name | R700 | Turks |
| Fab Process | 55 nm | 40 nm |
| Bus | PCIe 2.0 x16 (PCIe bridge) | PCIe 2.1 x16 |
| Memory | 512 MB (x2) | 1024 MB |
| Core Speed | 625 MHz (x2) | 650 MHz |
| Shader Speed | N/A MHz (x2) | (N/A) MHz |
| Memory Speed | 993 MHz (x2) | 1000 MHz |
| Unified Shaders | 800(160x5) (x2) | 480 |
| Texture Mapping Units | 40 (x2) | 24 |
| Render Output Units | 16 (x2) | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit (x2) | 128-bit |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
| Power (Max TDP) | 250 watts | 50 watts |
| Shader Model | 4.1 | 5.0 |
| Bandwidth | 127104 MB/sec | 64000 MB/sec |
| Texel Rate | 50000 Mtexels/sec | 15600 Mtexels/sec |
| Pixel Rate | 20000 Mpixels/sec | 5200 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
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