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GeForce GTS 450 vs Radeon HD 6450 (OEM) 1GB
Intro
The GeForce GTS 450 comes with a GPU core speed of 783 MHz, and the 512 MB of GDDR5 memory runs at 902 MHz through a 128-bit bus. It also features 192 Stream Processors, 32 TAUs, and 16 ROPs.Compare all that to the Radeon HD 6450 (OEM) 1GB, which features a core clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 64-bit memory bus, and makes use of a 40 nm design. It features 160 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) 1GB |
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31 Watts |
| GeForce GTS 450 |
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106 Watts |
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Memory Bandwidth
As far as performance goes, the GeForce GTS 450 should in theory be quite a bit superior to the Radeon HD 6450 (OEM) 1GB in general. (explain)
| GeForce GTS 450 |
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57728 MB/sec |
| Radeon HD 6450 (OEM) 1GB |
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28800 MB/sec |
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Texel Rate
The GeForce GTS 450 is a lot (about 318%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)| GeForce GTS 450 |
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25056 Mtexels/sec |
| Radeon HD 6450 (OEM) 1GB |
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6000 Mtexels/sec |
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Pixel Rate
If running with a high resolution is important to you, then the GeForce GTS 450 is the winner, by a large margin. (explain)| GeForce GTS 450 |
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12528 Mpixels/sec |
| Radeon HD 6450 (OEM) 1GB |
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3000 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 450Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 6450 (OEM) 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce GTS 450 | Radeon HD 6450 (OEM) 1GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | September 2010 | February 2011 |
| Code Name | GF106 | Caicos |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe x16 | PCIe 2.1 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 783 MHz | 750 MHz |
| Shader Speed | 1566 MHz | (N/A) MHz |
| Memory Speed | 902 MHz (3608 MHz effective) | 900 MHz (3600 MHz effective) |
| Unified Shaders | 192 | 160 |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 16 | 4 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 128-bit | 64-bit |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
| Power (Max TDP) | 106 watts | 31 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 57728 MB/sec | 28800 MB/sec |
| Texel Rate | 25056 Mtexels/sec | 6000 Mtexels/sec |
| Pixel Rate | 12528 Mpixels/sec | 3000 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
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