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GeForce GTS 250 512MB vs Radeon HD 5770
Intro
The GeForce GTS 250 512MB comes with a clock frequency of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also uses a 256-bit memory bus, and uses a 65/55 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.Compare all that to the Radeon HD 5770, which features a core clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.
Crysis
| Settings: | High Detail |
| AA: | 4x |
| AF: | none |
| Resolution: | 1680x1050 |
| Test Machine: | Intel Core i5-750,Windows 7 Ultimate x64,3 x 2GB (Source) |
| Radeon HD 5770 |
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34 FPS |
| GeForce GTS 250 512MB |
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27 FPS |
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Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
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108 Watts |
| GeForce GTS 250 512MB |
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145 Watts |
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Memory Bandwidth
The Radeon HD 5770, in theory, should perform just a bit faster than the GeForce GTS 250 512MB overall. (explain)
| Radeon HD 5770 |
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76800 MB/sec |
| GeForce GTS 250 512MB |
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70400 MB/sec |
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Texel Rate
The GeForce GTS 250 512MB is quite a bit (approximately 39%) faster with regards to AF than the Radeon HD 5770. (explain)| GeForce GTS 250 512MB |
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47232 Mtexels/sec |
| Radeon HD 5770 |
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34000 Mtexels/sec |
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Pixel Rate
The Radeon HD 5770 will be a bit (approximately 15%) faster with regards to AA than the GeForce GTS 250 512MB, and also capable of handling higher screen resolutions more effectively. (explain)| Radeon HD 5770 |
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13600 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.
Price Comparison
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce GTS 250 512MBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 5770Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTS 250 512MB | Radeon HD 5770 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 3, 2009 | October 13, 2009 |
| Code Name | G92a/b | Juniper XT |
| Fab Process | 65/55 nm | 40 nm |
| Bus | PCIe x16 2.0 | PCIe 2.1 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 738 MHz | 850 MHz |
| Shader Speed | 1836 MHz | (N/A) MHz |
| Memory Speed | 1100 MHz (2200 MHz effective) | 1200 MHz (4800 MHz effective) |
| Unified Shaders | 128 | 800(160x5) |
| Texture Mapping Units | 64 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.2 |
| Power (Max TDP) | 145 watts | 108 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 70400 MB/sec | 76800 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 34000 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 13600 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, 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 most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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