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Radeon HD 4870 512MB vs Radeon HD 6970
Intro
The Radeon HD 4870 512MB makes use of a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.Compare all of that to the Radeon HD 6970, which features core clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs along with 96 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4870 512MB |
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150 Watts |
| Radeon HD 6970 |
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250 Watts |
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Memory Bandwidth
Theoretically, the Radeon HD 6970 should perform quite a bit faster than the Radeon HD 4870 512MB overall. (explain)
| Radeon HD 6970 |
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176000 MB/sec |
| Radeon HD 4870 512MB |
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115200 MB/sec |
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Texel Rate
The Radeon HD 6970 is quite a bit (approximately 182%) faster with regards to anisotropic filtering than the Radeon HD 4870 512MB. (explain)| Radeon HD 6970 |
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84480 Mtexels/sec |
| Radeon HD 4870 512MB |
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30000 Mtexels/sec |
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Pixel Rate
If running with a high screen resolution is important to you, then the Radeon HD 6970 is the winner, by far. (explain)| Radeon HD 6970 |
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28160 Mpixels/sec |
| Radeon HD 4870 512MB |
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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
Radeon HD 4870 512MBAmazon.com
Check prices at:
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Radeon HD 6970Amazon.com
Check prices at:
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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 4870 512MB | Radeon HD 6970 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Jun 25, 2008 | December 2010 |
| Code Name | RV770 XT | Cayman XT |
| Memory | 512 MB | 2048 MB |
| Core Speed | 750 MHz | 880 MHz |
| Memory Speed | 3600 MHz | 5500 MHz |
| Power (Max TDP) | 150 watts | 250 watts |
| Bandwidth | 115200 MB/sec | 176000 MB/sec |
| Texel Rate | 30000 Mtexels/sec | 84480 Mtexels/sec |
| Pixel Rate | 12000 Mpixels/sec | 28160 Mpixels/sec |
| Unified Shaders | 800(160x5) | 1536 |
| Texture Mapping Units | 40 | 96 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 956 million | 2640 million |
| Bus | PCIe 2.0 x16 | PCIe x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total 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 in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 4870 512MBAmazon.com
Check prices at:
|
Radeon HD 6970Amazon.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
2 Responses to “Radeon HD 4870 512MB vs Radeon HD 6970”[...] you will see a good performance, just from the 4 series to 6 series jump. Heres a great comparison Radeon HD 4870 512MB vs Radeon HD 6970 – Performance Comparison Benchmarks @ Hardware Compare All in all you wouldnt be disappointed or ripped off getting a 6970. I7 950 D0@ 4.1Ghz [...]
4870 is best card