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GeForce GTS 250 512MB vs Radeon HD 5770
Intro
The GeForce GTS 250 512MB has clock speeds of 738 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs as well as 64 TAUs and 16 ROPs.Compare those specifications to the Radeon HD 5770, which comes with a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation 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 should be 9% quicker than the GeForce GTS 250 512MB overall, due to its higher 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 much (about 39%) better at texture filtering 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 small bit (approximately 15%) more effective at anti-aliasing than the GeForce GTS 250 512MB, and also will be capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce GTS 250 512MB
Radeon HD 5770
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