Dota 2 hd 6770 vs 7770
Radeon HD 6770 1GB vs Radeon HD 7770
Intro
Compare that to the Radeon HD 7770, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP )
| Radeon HD 7770 | 80 Watts |
| Radeon HD 6770 1GB | 108 Watts |
| Difference: 28 Watts (35%) |
Memory Bandwidth
Performance-wise, the Radeon HD 7770 should in theory be just a bit superior to the Radeon HD 6770 1GB in general. (explain)
| Radeon HD 7770 | 72000 MB/sec |
| Radeon HD 6770 1GB | 67200 MB/sec |
| Difference: 4800 (7%) |
Texel Rate
| Radeon HD 7770 | 40000 Mtexels/sec |
| Radeon HD 6770 1GB | 36000 Mtexels/sec |
| Difference: 4000 (11%) |
Pixel Rate
| Radeon HD 7770 | 16000 Mpixels/sec |
| Radeon HD 6770 1GB | 14400 Mpixels/sec |
| Difference: 1600 (11%) |
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 1GB
Check prices at:
Radeon HD 7770
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.
Specifications
| Model | Radeon HD 6770 1GB | Radeon HD 7770 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | January 2011 | February 2012 |
| Code Name | Juniper XT | Cape Verde XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 900 MHz | 1000 MHz |
| Memory Speed | 4200 MHz | 4500 MHz |
| Power (Max TDP) | 108 watts | 80 watts |
| Bandwidth | 67200 MB/sec | 72000 MB/sec |
| Texel Rate | 36000 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 14400 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 800 | 640 |
| Texture Mapping Units | 40 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 1040 million | 1500 million |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering – AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second – measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines – also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandw > Display Prices
Radeon HD 6770 1GB vs Radeon HD 7770
Intro
Compare that to the Radeon HD 7770, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory is set to run at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP )
| Radeon HD 7770 | 80 Watts |
| Radeon HD 6770 1GB | 108 Watts |
| Difference: 28 Watts (35%) |
Memory Bandwidth
Performance-wise, the Radeon HD 7770 should in theory be just a bit superior to the Radeon HD 6770 1GB in general. (explain)
| Radeon HD 7770 | 72000 MB/sec |
| Radeon HD 6770 1GB | 67200 MB/sec |
| Difference: 4800 (7%) |
Texel Rate
| Radeon HD 7770 | 40000 Mtexels/sec |
| Radeon HD 6770 1GB | 36000 Mtexels/sec |
| Difference: 4000 (11%) |
Pixel Rate
| Radeon HD 7770 | 16000 Mpixels/sec |
| Radeon HD 6770 1GB | 14400 Mpixels/sec |
| Difference: 1600 (11%) |
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 1GB
Check prices at:
Radeon HD 7770
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.
Specifications
| Model | Radeon HD 6770 1GB | Radeon HD 7770 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | January 2011 | February 2012 |
| Code Name | Juniper XT | Cape Verde XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 900 MHz | 1000 MHz |
| Memory Speed | 4200 MHz | 4500 MHz |
| Power (Max TDP) | 108 watts | 80 watts |
| Bandwidth | 67200 MB/sec | 72000 MB/sec |
| Texel Rate | 36000 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 14400 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 800 | 640 |
| Texture Mapping Units | 40 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 1040 million | 1500 million |
| Bus | PCIe x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering – AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second – measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines – also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandw > Display Prices
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