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Radeon HD 7870 vs Radeon HD 7950
Intro
The Radeon HD 7870 makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory runs at a frequency of 1200 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.Compare those specifications to the Radeon HD 7950, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 RAM. It features 1792 SPUs as well as 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 HD 7950 |
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7731 points |
| Radeon HD 7870 |
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6230 points |
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Zcash Mining Hash Rate
| Radeon HD 7950 |
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235 Sol/s |
| Radeon HD 7870 |
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172 Sol/s |
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Ethereum Mining Hash Rate
| Radeon HD 7950 |
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21 Mh/s |
| Radeon HD 7870 |
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16 Mh/s |
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Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 7870 |
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175 Watts |
| Radeon HD 7950 |
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200 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 7950 should theoretically be a lot better than the Radeon HD 7870 overall. (explain)
| Radeon HD 7950 |
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240000 MB/sec |
| Radeon HD 7870 |
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153600 MB/sec |
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Texel Rate
The Radeon HD 7950 is a bit (about 12%) better at texture filtering than the Radeon HD 7870. (explain)| Radeon HD 7950 |
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89600 Mtexels/sec |
| Radeon HD 7870 |
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80000 Mtexels/sec |
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Pixel Rate
If using lots of anti-aliasing is important to you, then the Radeon HD 7870 is superior to the Radeon HD 7950, by far. (explain)| Radeon HD 7870 |
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32000 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 7870Amazon.com
Check prices at:
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Radeon HD 7950Amazon.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 7870 | Radeon HD 7950 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | March 2012 | January 2012 |
| Code Name | Pitcairn XT | Tahiti Pro |
| Memory | 2048 MB | 1536 MB |
| Core Speed | 1000 MHz | 800 MHz |
| Memory Speed | 4800 MHz | 5000 MHz |
| Power (Max TDP) | 175 watts | 200 watts |
| Bandwidth | 153600 MB/sec | 240000 MB/sec |
| Texel Rate | 80000 Mtexels/sec | 89600 Mtexels/sec |
| Pixel Rate | 32000 Mpixels/sec | 25600 Mpixels/sec |
| Unified Shaders | 1280 | 1792 |
| Texture Mapping Units | 80 | 112 |
| Render Output Units | 32 | 32 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 384-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | 2800 million | 4313 million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 11.1 | DirectX 11.1 |
| OpenGL Version | OpenGL 4.2 | OpenGL 4.2 |
Memory Bandwidth: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
Radeon HD 7870Amazon.com
Check prices at:
|
Radeon HD 7950Amazon.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
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how is the 7950 a better overall card but the 7870 is better at handling higher graphics? HW compare get your info correct cause this makes no sense
"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."
can anyone help for selecting a card that is compatible with my PC