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Radeon HD 6770 vs Radeon HD 7750
Intro
The Radeon HD 6770 features core speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs as well as 40 TAUs and 16 ROPs.Compare all of that to the Radeon HD 7750, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7750 |
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55 Watts |
| Radeon HD 6770 |
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108 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 7750 should perform just a bit faster than the Radeon HD 6770 overall. (explain)
| Radeon HD 7750 |
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72000 MB/sec |
| Radeon HD 6770 |
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67200 MB/sec |
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Texel Rate
The Radeon HD 6770 should be much (more or less 41%) faster with regards to AF than the Radeon HD 7750. (explain)| Radeon HD 6770 |
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36000 Mtexels/sec |
| Radeon HD 7750 |
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25600 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the Radeon HD 6770 is a better choice, but only just. (explain)| Radeon HD 6770 |
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14400 Mpixels/sec |
| Radeon HD 7750 |
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12800 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 6770Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 7750Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Radeon HD 6770 | Radeon HD 7750 |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | January 2011 | February 2012 |
| Code Name | Juniper XT | Cape Verde Pro |
| Fab Process | 40 nm | 28 nm |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 900 MHz | 800 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 1050 MHz (4200 MHz effective) | 1125 MHz (4500 MHz effective) |
| Unified Shaders | 800 | 512 |
| Texture Mapping Units | 40 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
| Power (Max TDP) | 108 watts | 55 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 67200 MB/sec | 72000 MB/sec |
| Texel Rate | 36000 Mtexels/sec | 25600 Mtexels/sec |
| Pixel Rate | 14400 Mpixels/sec | 12800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
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