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Radeon HD 6770 1GB vs Radeon HD 6790
Intro
The Radeon HD 6770 1GB has core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.Compare those specifications to the Radeon HD 6790, which comes with a GPU core clock speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also features 800 SPUs, 40 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6770 1GB |
|
108 Watts |
| Radeon HD 6790 |
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150 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6790 should perform a lot faster than the Radeon HD 6770 1GB in general. (explain)
| Radeon HD 6790 |
|
134400 MB/sec |
| Radeon HD 6770 1GB |
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67200 MB/sec |
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Texel Rate
The Radeon HD 6770 1GB should be just a bit (about 7%) faster with regards to AF than the Radeon HD 6790. (explain)| Radeon HD 6770 1GB |
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36000 Mtexels/sec |
| Radeon HD 6790 |
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33600 Mtexels/sec |
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Pixel Rate
The Radeon HD 6770 1GB is a bit (about 7%) more effective at AA than the Radeon HD 6790, and will be capable of handling higher resolutions while still performing well. (explain)| Radeon HD 6770 1GB |
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14400 Mpixels/sec |
| Radeon HD 6790 |
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13440 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 6770 1GBAmazon.com
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Radeon HD 6790Amazon.com
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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 6770 1GB | Radeon HD 6790 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | January 2011 | April 2011 |
| Code Name | Juniper XT | Barts LE |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 900 MHz | 840 MHz |
| Memory Speed | 4200 MHz | 4200 MHz |
| Power (Max TDP) | 108 watts | 150 watts |
| Bandwidth | 67200 MB/sec | 134400 MB/sec |
| Texel Rate | 36000 Mtexels/sec | 33600 Mtexels/sec |
| Pixel Rate | 14400 Mpixels/sec | 13440 Mpixels/sec |
| Unified Shaders | 800 | 800 |
| Texture Mapping Units | 40 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 1040 million | 1700 million |
| Bus | PCIe x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core 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 applied per second.
Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.
Radeon HD 6770 1GBAmazon.com
Check prices at:
|
Radeon HD 6790Amazon.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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One Response to “Radeon HD 6770 1GB vs Radeon HD 6790”6790 is the best in compare to all in 7500 rs