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Radeon HD 5770 vs Radeon HD 6870
Intro
The Radeon HD 5770 has a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.Compare those specifications to the Radeon HD 6870, which features a GPU core clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is made up of 1120 Stream Processors, 56 TAUs, and 32 ROPs.
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 theoretically be a lot superior to the Radeon HD 5770 overall. (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 much (approximately 48%) more effective at texture filtering 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 (more or less 112%) faster with regards to FSAA than the Radeon HD 5770, and should be able to handle higher screen resolutions without slowing down too much. (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
Radeon HD 5770Amazon.com
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Radeon HD 6870Amazon.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 5770 | Radeon HD 6870 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | October 13, 2009 | October 2010 |
| Code Name | Juniper XT | Barts XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 850 MHz | 900 MHz |
| Memory Speed | 4800 MHz | 4200 MHz |
| Power (Max TDP) | 108 watts | 151 watts |
| Bandwidth | 76800 MB/sec | 134400 MB/sec |
| Texel Rate | 34000 Mtexels/sec | 50400 Mtexels/sec |
| Pixel Rate | 13600 Mpixels/sec | 28800 Mpixels/sec |
| 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 |
| Fab Process | 40 nm | 40 nm |
| Transistors | 1040 million | 1700 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 largest amount of data (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of 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 maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 ability to reach the max fill rate.
Radeon HD 5770Amazon.com
Check prices at:
|
Radeon HD 6870Amazon.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
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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