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Radeon HD 5770 vs Radeon HD 6870
Intro
The Radeon HD 5770 features a core clock frequency of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.Compare those specs to the Radeon HD 6870, which has GPU core speed of 900 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also features 1120 SPUs, 56 TAUs, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| Radeon HD 6870 |
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151 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 6870 should in theory be quite a bit superior to the Radeon HD 5770 in general. (explain)
| Radeon HD 6870 |
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134400 MB/sec |
| Radeon HD 5770 |
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76800 MB/sec |
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Texel Rate
The Radeon HD 6870 is quite a bit (about 48%) faster with regards to AF than the Radeon HD 5770. (explain)| Radeon HD 6870 |
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50400 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
The Radeon HD 6870 will be quite a bit (approximately 112%) more effective at AA than the Radeon HD 5770, and also will be capable of handling higher screen resolutions more effectively. (explain)| Radeon HD 6870 |
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28800 Mpixels/sec |
| Radeon HD 5770 |
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13600 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 5770Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6870Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | Radeon HD 5770 | Radeon HD 6870 |
|---|---|---|
| Manufacturer | ATi | ATi |
| Year | October 13, 2009 | October 2010 |
| Code Name | Juniper XT | Barts XT |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 850 MHz | 900 MHz |
| Shader Speed | N/A MHz | (N/A) MHz |
| Memory Speed | 1200 MHz (4800 MHz effective) | 1050 MHz (4200 MHz effective) |
| Unified Shaders | 800(160x5) | 1120 |
| Texture Mapping Units | 40 | 56 |
| Render Output Units | 16 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 3.2 | OpenGL 4.1 |
| Power (Max TDP) | 108 watts | 151 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 76800 MB/sec | 134400 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 28800 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.
Comments
5 Responses to “Radeon HD 5770 vs Radeon HD 6870”[...] HD5770 ist die 6770 bzw. 6790 Der Leistungssprung ist gewaltig, die HD 6870 ist 112% schneller Radeon HD 5770 vs Radeon HD 6870 – Performance Comparison Benchmarks @ Hardware Compare Bench - GPU11 - AnandTech :: Your Source for Hardware Analysis and News Im Vergleich zur HD 5870 [...]
i made the change from a sapphire 5770 toxic to another sapphire 6870... it was def worth the change... i played dead rising 2 on both cards... the 5770 could only handle trilinear and med zombies and low shadows... the 6870 does it easily on 4x af and everything else on high... the 6870 does very well even with shadows and everything.
the hd 5770 is more comparable to the 6770 or 6790, the because of this the performance boost is huge, the HD 6870 is 112% more powerful
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