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Radeon HD 5850 vs Radeon HD 6770 1GB
Intro
The Radeon HD 5850 comes with a clock speed of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It features 1440(288x5) SPUs, 72 Texture Address Units, and 32 ROPs.Compare all that to the Radeon HD 6770 1GB, which comes with core speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6770 1GB |
|
108 Watts |
| Radeon HD 5850 |
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151 Watts |
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Memory Bandwidth
In theory, the Radeon HD 5850 should perform a lot faster than the Radeon HD 6770 1GB in general. (explain)
| Radeon HD 5850 |
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128000 MB/sec |
| Radeon HD 6770 1GB |
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67200 MB/sec |
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Texel Rate
The Radeon HD 5850 is much (more or less 45%) better at AF than the Radeon HD 6770 1GB. (explain)| Radeon HD 5850 |
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52200 Mtexels/sec |
| Radeon HD 6770 1GB |
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36000 Mtexels/sec |
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Pixel Rate
The Radeon HD 5850 will be quite a bit (approximately 61%) better at full screen anti-aliasing than the Radeon HD 6770 1GB, and will be capable of handling higher resolutions better. (explain)| Radeon HD 5850 |
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23200 Mpixels/sec |
| Radeon HD 6770 1GB |
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14400 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 5850Amazon.com
Check prices at:
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Radeon HD 6770 1GBAmazon.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 5850 | Radeon HD 6770 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | September 30, 2009 | January 2011 |
| Code Name | Cypress PRO | Juniper XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 725 MHz | 900 MHz |
| Memory Speed | 4000 MHz | 4200 MHz |
| Power (Max TDP) | 151 watts | 108 watts |
| Bandwidth | 128000 MB/sec | 67200 MB/sec |
| Texel Rate | 52200 Mtexels/sec | 36000 Mtexels/sec |
| Pixel Rate | 23200 Mpixels/sec | 14400 Mpixels/sec |
| Unified Shaders | 1440(288x5) | 800 |
| Texture Mapping Units | 72 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 2154 million | 1040 million |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once 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 high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record 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 clock speed of the card. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 5850Amazon.com
Check prices at:
|
Radeon HD 6770 1GBAmazon.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
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