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Geforce GTX 680 vs Radeon HD 7770
Intro
The Geforce GTX 680 comes with a GPU clock speed of 1006 MHz, and the 2048 MB of GDDR5 RAM runs at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 128 TAUs, and 32 ROPs.Compare those specs to the Radeon HD 7770, which features a core clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 ROPs.
Benchmarks
These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.
3DMark Fire Strike Graphics Score
| Geforce GTX 680 |
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7650 points |
| Radeon HD 7770 |
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3180 points |
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Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7770 |
|
80 Watts |
| Geforce GTX 680 |
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195 Watts |
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Memory Bandwidth
In theory, the Geforce GTX 680 should be much faster than the Radeon HD 7770 overall. (explain)
| Geforce GTX 680 |
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192256 MB/sec |
| Radeon HD 7770 |
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72000 MB/sec |
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Texel Rate
The Geforce GTX 680 is much (more or less 222%) faster with regards to texture filtering than the Radeon HD 7770. (explain)| Geforce GTX 680 |
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128768 Mtexels/sec |
| Radeon HD 7770 |
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40000 Mtexels/sec |
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Pixel Rate
If using lots of anti-aliasing is important to you, then the Geforce GTX 680 is a better choice, by far. (explain)| Geforce GTX 680 |
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32192 Mpixels/sec |
| Radeon HD 7770 |
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16000 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
Geforce GTX 680Amazon.com
Check prices at:
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Radeon HD 7770Amazon.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 | Geforce GTX 680 | Radeon HD 7770 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | March 2012 | February 2012 |
| Code Name | GK104 | Cape Verde XT |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 1006 MHz | 1000 MHz |
| Memory Speed | 6008 MHz | 4500 MHz |
| Power (Max TDP) | 195 watts | 80 watts |
| Bandwidth | 192256 MB/sec | 72000 MB/sec |
| Texel Rate | 128768 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 32192 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 1536 | 640 |
| Texture Mapping Units | 128 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | 3540 million | 1500 million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11.0 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must 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 high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics 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 maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends 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.
Geforce GTX 680Amazon.com
Check prices at:
|
Radeon HD 7770Amazon.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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Comments
4 Responses to “Geforce GTX 680 vs Radeon HD 7770”confusion ? which would be the next buy AMD or NVIDIA both companies has launched there Gen 3 based cards can u suggest good 3d support budget card . around 250$ .
GTX 560TI [448 cores] if u care Nvidia's PhysiX simulation or Radeon HD7850 if u care better graphics [probably better filtering technology]
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these results are very surprising i thought the 7770 would have been more of a challenge. i own a sapphire hd 7770 ghz oc... perhaps this card should be compared to the gtx 680 instead of the stock 7770