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GeForce GTX 860M vs Radeon HD 3850 X2
Intro
The GeForce GTX 860M makes use of a 28 nm design. nVidia has set the core frequency at 797 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this particular card. It features 1152 SPUs along with 96 Texture Address Units and 16 Rasterization Operator Units.Compare that to the Radeon HD 3850 X2, which comes with GPU core speed of 668 MHz, and 512 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) Stream Processors, 16 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Theoretically speaking, the Radeon HD 3850 X2 is 66% quicker than the GeForce GTX 860M in general, due to its higher data rate. (explain)
| Radeon HD 3850 X2 |
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105984 MB/sec |
| GeForce GTX 860M |
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64000 MB/sec |
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Texel Rate
The GeForce GTX 860M will be a lot (more or less 258%) faster with regards to texture filtering than the Radeon HD 3850 X2. (explain)| GeForce GTX 860M |
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76512 Mtexels/sec |
| Radeon HD 3850 X2 |
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21376 Mtexels/sec |
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Pixel Rate
The Radeon HD 3850 X2 will be quite a bit (about 68%) more effective at AA than the GeForce GTX 860M, and also should be capable of handling higher resolutions more effectively. (explain)| Radeon HD 3850 X2 |
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21376 Mpixels/sec |
| GeForce GTX 860M |
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12752 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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Price Comparison
GeForce GTX 860MAmazon.com
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Radeon HD 3850 X2Amazon.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 860M | Radeon HD 3850 X2 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | March 12 2014 | Apr 4, 2008 |
| Code Name | GM107 | RV670 PRO |
| Memory | 4096 MB | 512 MB (x2) |
| Core Speed | 797 MHz | 668 MHz (x2) |
| Memory Speed | 4000 MHz | 1656 MHz (x2) |
| Power (Max TDP) | 45 watts | (Unknown) watts |
| Bandwidth | 64000 MB/sec | 105984 MB/sec |
| Texel Rate | 76512 Mtexels/sec | 21376 Mtexels/sec |
| Pixel Rate | 12752 Mpixels/sec | 21376 Mpixels/sec |
| Unified Shaders | 1152 | 320(64x5) (x2) |
| Texture Mapping Units | 96 | 16 (x2) |
| Render Output Units | 16 | 16 (x2) |
| Bus Type | GDDR5 | GDDR3 |
| Bus Width | 128-bit | 256-bit (x2) |
| Fab Process | 28 nm | 55 nm |
| Transistors | (Unknown) million | (Unknown) million |
| Bus | PCIe 3.0 x16 | PCIe 2.0 x16/(internal PCIe 1.1 x16) |
| DirectX Version | DirectX 12 | DirectX 10.1 |
| OpenGL Version | OpenGL 4.5 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
GeForce GTX 860MAmazon.com
Check prices at:
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Radeon HD 3850 X2Amazon.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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