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GeForce GTS 250 512MB vs Radeon HD 5770
Intro
The GeForce GTS 250 512MB has core speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 16 ROPs.Compare those specifications to the Radeon HD 5770, which uses a 40 nm design. AMD has set the core speed at 850 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this card. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5770 |
|
108 Watts |
| GeForce GTS 250 512MB |
|
145 Watts |
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Memory Bandwidth
In theory, the Radeon HD 5770 is 9% faster than the GeForce GTS 250 512MB in general, because of its greater data rate. (explain)
| Radeon HD 5770 |
|
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 a lot (about 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 should be a bit (approximately 15%) more effective at AA than the GeForce GTS 250 512MB, and will be capable of handling higher resolutions without losing too much performance. (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
GeForce GTS 250 512MB
Radeon HD 5770
Specifications
| Model | GeForce GTS 250 512MB | Radeon HD 5770 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | March 3, 2009 | October 13, 2009 |
| Code Name | G92a/b | Juniper XT |
| Memory | 512 MB | 1024 MB |
| Core Speed | 738 MHz | 850 MHz |
| Memory Speed | 2200 MHz | 4800 MHz |
| Power (Max TDP) | 145 watts | 108 watts |
| Bandwidth | 70400 MB/sec | 76800 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 34000 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 13600 Mpixels/sec |
| 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 |
| Fab Process | 65/55 nm | 40 nm |
| Transistors | 754 million | 1040 million |
| Bus | PCIe x16 2.0 | PCIe 2.1 x16 |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video 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 most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's 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 many 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.
GeForce GTS 250 512MB
Radeon HD 5770
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