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GeForce 8500 GT vs Radeon HD 5450
Intro
The GeForce 8500 GT has a GPU clock speed of 450 MHz, and the 512 MB of DDR2 RAM runs at 400 MHz through a 128-bit bus. It also features 16 Stream Processors, 8 TAUs, and 4 ROPs.Compare those specifications to the Radeon HD 5450, which features GPU core speed of 650 MHz, and 512 MB of DDR3 RAM running at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5450 |
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19 Watts |
| GeForce 8500 GT |
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45 Watts |
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Memory Bandwidth
Both cards have exactly the same bandwidth, so in theory they should have the same performance. (explain)
Texel Rate
The Radeon HD 5450 will be quite a bit (approximately 44%) faster with regards to texture filtering than the GeForce 8500 GT. (explain)| Radeon HD 5450 |
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5200 Mtexels/sec |
| GeForce 8500 GT |
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3600 Mtexels/sec |
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Pixel Rate
If running with high levels of AA is important to you, then the Radeon HD 5450 is a better choice, and very much so. (explain)| Radeon HD 5450 |
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2600 Mpixels/sec |
| GeForce 8500 GT |
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1800 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 8500 GTAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 5450Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce 8500 GT | Radeon HD 5450 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | April 2007 | February 4, 2010 |
| Code Name | G86 | Cedar PRO |
| Fab Process | 80 nm | 40 nm |
| Bus | PCIe x16, PCI, PCIe x16 2.0 | PCIe 2.1 x16 |
| Memory | 512 MB | 512 MB |
| Core Speed | 450 MHz | 650 MHz |
| Shader Speed | 900 MHz | (N/A) MHz |
| Memory Speed | 400 MHz (800 MHz effective) | 800 MHz (1600 MHz effective) |
| Unified Shaders | 16 | 80(16x5) |
| Texture Mapping Units | 8 | 8 |
| Render Output Units | 4 | 4 |
| Bus Type | DDR2 | DDR3 |
| Bus Width | 128-bit | 64-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
| Power (Max TDP) | 45 watts | 19 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 12800 MB/sec | 12800 MB/sec |
| Texel Rate | 3600 Mtexels/sec | 5200 Mtexels/sec |
| Pixel Rate | 1800 Mpixels/sec | 2600 Mpixels/sec |
Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock 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 processed per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
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