 |
 |
|
|
|
Radeon HD 3870 1GB vs Radeon HD 6570 (OEM) 2GB
Intro
The Radeon HD 3870 1GB features core clock speeds of 775 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR4 memory. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.Compare that to the Radeon HD 6570 (OEM) 2GB, which uses a 40 nm design. ATi has clocked the core speed at 650 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this model. It features 480 SPUs as well as 24 TAUs and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6570 (OEM) 2GB |
|
50 Watts |
| Radeon HD 3870 1GB |
|
106 Watts |
|
|
Memory Bandwidth
Theoretically speaking, the Radeon HD 3870 1GB should be a little bit faster than the Radeon HD 6570 (OEM) 2GB overall. (explain)
| Radeon HD 3870 1GB |
|
72000 MB/sec |
| Radeon HD 6570 (OEM) 2GB |
|
64000 MB/sec |
|
|
Texel Rate
The Radeon HD 6570 (OEM) 2GB is quite a bit (approximately 26%) faster with regards to anisotropic filtering than the Radeon HD 3870 1GB. (explain)| Radeon HD 6570 (OEM) 2GB |
|
15600 Mtexels/sec |
| Radeon HD 3870 1GB |
|
12400 Mtexels/sec |
|
|
Pixel Rate
If using a high resolution is important to you, then the Radeon HD 3870 1GB is the winner, and very much so. (explain)| Radeon HD 3870 1GB |
|
12400 Mpixels/sec |
| Radeon HD 6570 (OEM) 2GB |
|
5200 Mpixels/sec |
|
|
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 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Radeon HD 6570 (OEM) 2GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model | Radeon HD 3870 1GB | 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 | 1024 MB | 1024 MB |
| Core Speed | 775 MHz | 650 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 1125 MHz | 1000 MHz |
| Unified Shaders | 320(64x5) | 480 |
| Texture Mapping Units | 16 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR4 | 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 | 72000 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 maximum amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 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, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Comments
Be the first to leave a comment!