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Radeon HD 4650 512MB vs Radeon HD 6970
Intro
The Radeon HD 4650 512MB comes with a core clock frequency of 600 MHz and a DDR2 memory frequency of 500 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 32 TAUs, and 8 ROPs.Compare all of that to the Radeon HD 6970, which features clock speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 Texture Address Units and 32 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4650 512MB |
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55 Watts |
| Radeon HD 6970 |
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250 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 6970 should in theory be much better than the Radeon HD 4650 512MB in general. (explain)
| Radeon HD 6970 |
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176000 MB/sec |
| Radeon HD 4650 512MB |
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16000 MB/sec |
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Texel Rate
The Radeon HD 6970 will be much (more or less 340%) better at anisotropic filtering than the Radeon HD 4650 512MB. (explain)| Radeon HD 6970 |
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84480 Mtexels/sec |
| Radeon HD 4650 512MB |
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19200 Mtexels/sec |
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Pixel Rate
If running with high levels of AA is important to you, then the Radeon HD 6970 is the winner, and very much so. (explain)| Radeon HD 6970 |
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28160 Mpixels/sec |
| Radeon HD 4650 512MB |
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4800 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 4650 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 4650 512MB | Radeon HD 6970 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | December 2010 |
| Code Name | RV730 PRO | Cayman XT |
| Memory | 512 MB | 2048 MB |
| Core Speed | 600 MHz | 880 MHz |
| Memory Speed | 1000 MHz | 5500 MHz |
| Power (Max TDP) | 55 watts | 250 watts |
| Bandwidth | 16000 MB/sec | 176000 MB/sec |
| Texel Rate | 19200 Mtexels/sec | 84480 Mtexels/sec |
| Pixel Rate | 4800 Mpixels/sec | 28160 Mpixels/sec |
| Unified Shaders | 320(64x5) | 1536 |
| Texture Mapping Units | 32 | 96 |
| Render Output Units | 8 | 32 |
| Bus Type | DDR2 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 514 million | 2640 million |
| Bus | PCIe 2.0 x16, AGP 8x | PCIe x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the 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 the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4650 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.
|
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