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GeForce GTS 250 512MB vs Radeon HD 7990
Intro
The GeForce GTS 250 512MB uses a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM is set to run at a frequency of 1100 MHz on this specific card. It features 128 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.Compare all of that to the Radeon HD 7990, which comes with GPU core speed of 950 MHz, and 3072 MB of GDDR5 memory set to run at 1500 MHz through a 384-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GTS 250 512MB |
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145 Watts |
| Radeon HD 7990 |
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375 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 7990 should theoretically be a lot better than the GeForce GTS 250 512MB overall. (explain)
| Radeon HD 7990 |
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576000 MB/sec |
| GeForce GTS 250 512MB |
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70400 MB/sec |
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Texel Rate
The Radeon HD 7990 should be a lot (about 415%) better at texture filtering than the GeForce GTS 250 512MB. (explain)| Radeon HD 7990 |
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243200 Mtexels/sec |
| GeForce GTS 250 512MB |
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47232 Mtexels/sec |
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Pixel Rate
The Radeon HD 7990 should be a lot (about 415%) better at AA than the GeForce GTS 250 512MB, and also will be able to handle higher resolutions better. (explain)| Radeon HD 7990 |
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60800 Mpixels/sec |
| GeForce GTS 250 512MB |
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11808 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 GTS 250 512MBAmazon.com
Check prices at:
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Radeon HD 7990Amazon.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 | GeForce GTS 250 512MB | Radeon HD 7990 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | March 3, 2009 | April 2013 |
| Code Name | G92a/b | Malta |
| Memory | 512 MB | 3072 MB (x2) |
| Core Speed | 738 MHz | 950 MHz (x2) |
| Memory Speed | 2200 MHz | 6000 MHz (x2) |
| Power (Max TDP) | 145 watts | 375 watts |
| Bandwidth | 70400 MB/sec | 576000 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 243200 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 60800 Mpixels/sec |
| Unified Shaders | 128 | 2048 (x2) |
| Texture Mapping Units | 64 | 128 (x2) |
| Render Output Units | 16 | 32 (x2) |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 384-bit (x2) |
| Fab Process | 65/55 nm | 28 nm |
| Transistors | 754 million | 4313 million |
| Bus | PCIe x16 2.0 | PCIe 3.0 x16 |
| DirectX Version | DirectX 10 | DirectX 11.1 |
| OpenGL Version | OpenGL 3.1 | OpenGL 4.3 |
Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should 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 AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.
GeForce GTS 250 512MBAmazon.com
Check prices at:
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Radeon HD 7990Amazon.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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