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Radeon HD 6950 2GB vs Radeon R9 390 8G
Intro
The Radeon HD 6950 2GB has a clock speed of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.Compare those specs to the Radeon R9 390 8G, which features core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6950 2GB |
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200 Watts |
| Radeon R9 390 8G |
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275 Watts |
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Memory Bandwidth
The Radeon R9 390 8G should in theory perform a lot faster than the Radeon HD 6950 2GB in general. (explain)
| Radeon R9 390 8G |
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384000 MB/sec |
| Radeon HD 6950 2GB |
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160000 MB/sec |
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Texel Rate
The Radeon R9 390 8G is a lot (more or less 127%) better at AF than the Radeon HD 6950 2GB. (explain)| Radeon R9 390 8G |
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160000 Mtexels/sec |
| Radeon HD 6950 2GB |
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70400 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon R9 390 8G is a better choice, and very much so. (explain)| Radeon R9 390 8G |
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64000 Mpixels/sec |
| Radeon HD 6950 2GB |
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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 6950 2GBAmazon.com
Check prices at:
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Radeon R9 390 8GAmazon.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 6950 2GB | Radeon R9 390 8G |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | December 2010 | June 2015 |
| Code Name | Cayman Pro | Grenada PRO |
| Memory | 2048 MB | 8192 MB |
| Core Speed | 800 MHz | 1000 MHz |
| Memory Speed | 5000 MHz | 6000 MHz |
| Power (Max TDP) | 200 watts | 275 watts |
| Bandwidth | 160000 MB/sec | 384000 MB/sec |
| Texel Rate | 70400 Mtexels/sec | 160000 Mtexels/sec |
| Pixel Rate | 25600 Mpixels/sec | 64000 Mpixels/sec |
| Unified Shaders | 1408 | 2560 |
| Texture Mapping Units | 88 | 160 |
| Render Output Units | 32 | 64 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 256-bit | 512-bit |
| Fab Process | 40 nm | 28 nm |
| Transistors | 2640 million | 6200 million |
| Bus | PCIe x16 | PCIe 3.0 ×16 |
| DirectX Version | DirectX 11 | DirectX 12.0 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.5 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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 6950 2GBAmazon.com
Check prices at:
|
Radeon R9 390 8GAmazon.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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