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Radeon HD 7950 vs Radeon R9 280
Intro
The Radeon HD 7950 comes with a GPU core clock speed of 800 MHz, and the 1536 MB of GDDR5 memory is set to run at 1250 MHz through a 384-bit bus. It also is made up of 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.Compare that to the Radeon R9 280, which features a clock frequency of 933 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 384-bit bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 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
| Radeon R9 280 |
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7961 points |
| Radeon HD 7950 |
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7731 points |
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Zcash Mining Hash Rate
| Radeon HD 7950 |
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235 Sol/s |
| Radeon R9 280 |
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183 Sol/s |
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Ethereum Mining Hash Rate
| Radeon R9 280 |
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22 Mh/s |
| Radeon HD 7950 |
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21 Mh/s |
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Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7950 |
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200 Watts |
| Radeon R9 280 |
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250 Watts |
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Memory Bandwidth
Both cards have the exact same memory bandwidth, so in theory they should perform the same. (explain)
Texel Rate
The Radeon R9 280 is just a bit (about 17%) faster with regards to anisotropic filtering than the Radeon HD 7950. (explain)| Radeon R9 280 |
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104496 Mtexels/sec |
| Radeon HD 7950 |
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89600 Mtexels/sec |
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Pixel Rate
The Radeon R9 280 should be just a bit (about 17%) better at FSAA than the Radeon HD 7950, and also capable of handling higher screen resolutions without slowing down too much. (explain)| Radeon R9 280 |
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29856 Mpixels/sec |
| Radeon HD 7950 |
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25600 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 7950Amazon.com
Check prices at:
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Radeon R9 280Amazon.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 7950 | Radeon R9 280 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | January 2012 | March 2014 |
| Code Name | Tahiti Pro | Tahiti Pro |
| Memory | 1536 MB | 3072 MB |
| Core Speed | 800 MHz | 933 MHz |
| Memory Speed | 5000 MHz | 5000 MHz |
| Power (Max TDP) | 200 watts | 250 watts |
| Bandwidth | 240000 MB/sec | 240000 MB/sec |
| Texel Rate | 89600 Mtexels/sec | 104496 Mtexels/sec |
| Pixel Rate | 25600 Mpixels/sec | 29856 Mpixels/sec |
| Unified Shaders | 1792 | 1792 |
| Texture Mapping Units | 112 | 112 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 384-bit | 384-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | 4313 million | 4313 million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11.1 | DirectX 11.2 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.3 |
Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
Radeon HD 7950Amazon.com
Check prices at:
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Radeon R9 280Amazon.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.
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Comments
One Response to “Radeon HD 7950 vs Radeon R9 280”7950 does not have 1500 MB of RAM, it has 3G. Not at 800 MHz, it is at 850, auto-boosts to 925 if not hot. R9 has 850, boosts to 950 is not hot (1000 for the OC). It also has the same bus width, print density, mapping units and texture units becaue it's the same fucking card. It is not 17% better, not higher TDP.
This is basically all you do. Compare cards. You can't catch on the same card being the same? Way to provide a service. 10 buttons so I can share my findings with the world, not one to report an issue. The bloody frame with prices ALL say 7950 3GB. You didn't even read your own page.