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Radeon HD 7870 XT vs Radeon R7 M260X
Intro
The Radeon HD 7870 XT comes with a core clock speed of 925 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1536 SPUs, 96 Texture Address Units, and 32 ROPs.Compare all that to the Radeon R7 M260X, which uses a 28 nm design. AMD has set the core speed at 825 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this specific card. It features 384 SPUs along with 24 Texture Address Units and 8 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
In theory, the Radeon HD 7870 XT should be 200% faster than the Radeon R7 M260X in general, due to its higher bandwidth. (explain)
| Radeon HD 7870 XT |
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192000 MB/sec |
| Radeon R7 M260X |
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64000 MB/sec |
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Texel Rate
The Radeon HD 7870 XT is much (more or less 348%) faster with regards to AF than the Radeon R7 M260X. (explain)| Radeon HD 7870 XT |
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88800 Mtexels/sec |
| Radeon R7 M260X |
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19800 Mtexels/sec |
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Pixel Rate
If running with a high resolution is important to you, then the Radeon HD 7870 XT is the winner, and very much so. (explain)| Radeon HD 7870 XT |
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29600 Mpixels/sec |
| Radeon R7 M260X |
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6600 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 7870 XTAmazon.com
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Radeon R7 M260XAmazon.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 XT | Radeon R7 M260X |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | November 2012 | June 2014 |
| Code Name | Tahiti LE | Opal |
| Memory | 2048 MB | 2048 MB |
| Core Speed | 925 MHz | 825 MHz |
| Memory Speed | 6000 MHz | 4000 MHz |
| Power (Max TDP) | 185 watts | (Unknown) watts |
| Bandwidth | 192000 MB/sec | 64000 MB/sec |
| Texel Rate | 88800 Mtexels/sec | 19800 Mtexels/sec |
| Pixel Rate | 29600 Mpixels/sec | 6600 Mpixels/sec |
| Unified Shaders | 1536 | 384 |
| Texture Mapping Units | 96 | 24 |
| Render Output Units | 32 | 8 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 28 nm | 28 nm |
| Transistors | 4313 million | (Unknown) million |
| Bus | PCIe 3.0 x16 | PCIe 3.0 x8 |
| DirectX Version | DirectX 11.1 | DirectX 11.2 |
| OpenGL Version | OpenGL 4.3 | OpenGL 4.3 |
Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number 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 per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units 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 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 max fill rate.
Radeon HD 7870 XTAmazon.com
Check prices at:
|
Radeon R7 M260XAmazon.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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