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Radeon HD 4890 1GB vs Radeon R9 M385X
Intro
The Radeon HD 4890 1GB makes use of a 55 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM works at a frequency of 975 MHz on this particular card. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.Compare all of that to the Radeon R9 M385X, which uses a 28 nm design. AMD has clocked the core speed at 1100 MHz. The GDDR5 memory works at a speed of 1500 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
Theoretically speaking, the Radeon HD 4890 1GB should be a lot faster than the Radeon R9 M385X overall. (explain)
| Radeon HD 4890 1GB |
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124800 MB/sec |
| Radeon R9 M385X |
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96000 MB/sec |
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Texel Rate
The Radeon R9 M385X is a lot (more or less 54%) faster with regards to AF than the Radeon HD 4890 1GB. (explain)| Radeon R9 M385X |
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61600 Mtexels/sec |
| Radeon HD 4890 1GB |
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40000 Mtexels/sec |
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Pixel Rate
The Radeon R9 M385X is a small bit (about 10%) better at AA than the Radeon HD 4890 1GB, and also capable of handling higher resolutions more effectively. (explain)| Radeon R9 M385X |
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17600 Mpixels/sec |
| Radeon HD 4890 1GB |
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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
Radeon HD 4890 1GBAmazon.com
Check prices at:
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Radeon R9 M385XAmazon.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 4890 1GB | Radeon R9 M385X |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Apr 2, 2009 | 2015 |
| Code Name | RV790 XT | Bonaire |
| Memory | 1024 MB | 4096 MB |
| Core Speed | 1000 MHz | 1100 MHz |
| Memory Speed | 3900 MHz | 6000 MHz |
| Power (Max TDP) | 190 watts | (Unknown) watts |
| Bandwidth | 124800 MB/sec | 96000 MB/sec |
| Texel Rate | 40000 Mtexels/sec | 61600 Mtexels/sec |
| Pixel Rate | 16000 Mpixels/sec | 17600 Mpixels/sec |
| Unified Shaders | 800(160x5) | 896 |
| Texture Mapping Units | 40 | 56 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 55 nm | 28 nm |
| Transistors | 959 million | (Unknown) million |
| Bus | PCIe 2.0 x16 | PCIe 3.0 x16 |
| DirectX Version | DirectX 10.1 | DirectX 12 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.3 |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few 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 4890 1GBAmazon.com
Check prices at:
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Radeon R9 M385XAmazon.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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