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Radeon HD 6770 1GB vs Radeon R9 380 4G
Intro
The Radeon HD 6770 1GB comes with a GPU clock speed of 900 MHz, and the 1024 MB of GDDR5 memory is set to run at 1050 MHz through a 128-bit bus. It also is comprised of 800 SPUs, 40 TAUs, and 16 ROPs.Compare all that to the Radeon R9 380 4G, which has core speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs and 32 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6770 1GB |
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108 Watts |
| Radeon R9 380 4G |
|
190 Watts |
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Memory Bandwidth
In theory, the Radeon R9 380 4G should be 171% quicker than the Radeon HD 6770 1GB overall, because of its higher bandwidth. (explain)
| Radeon R9 380 4G |
|
182400 MB/sec |
| Radeon HD 6770 1GB |
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67200 MB/sec |
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Texel Rate
The Radeon R9 380 4G is a lot (approximately 202%) better at AF than the Radeon HD 6770 1GB. (explain)| Radeon R9 380 4G |
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108640 Mtexels/sec |
| Radeon HD 6770 1GB |
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36000 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon R9 380 4G is the winner, by far. (explain)| Radeon R9 380 4G |
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31040 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 6770 1GBAmazon.com
Check prices at:
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Radeon R9 380 4GAmazon.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 6770 1GB | Radeon R9 380 4G |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | January 2011 | June 2015 |
| Code Name | Juniper XT | Antigua PRO |
| Memory | 1024 MB | 4096 MB |
| Core Speed | 900 MHz | 970 MHz |
| Memory Speed | 4200 MHz | 5700 MHz |
| Power (Max TDP) | 108 watts | 190 watts |
| Bandwidth | 67200 MB/sec | 182400 MB/sec |
| Texel Rate | 36000 Mtexels/sec | 108640 Mtexels/sec |
| Pixel Rate | 14400 Mpixels/sec | 31040 Mpixels/sec |
| Unified Shaders | 800 | 1792 |
| Texture Mapping Units | 40 | 112 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 1040 million | 5000 million |
| Bus | PCIe x16 | PCIe 3.0 ×16 |
| DirectX Version | DirectX 11 | DirectX 12.0 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.5 |
Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 6770 1GBAmazon.com
Check prices at:
|
Radeon R9 380 4GAmazon.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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