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GeForce GTX 480 vs Radeon HD 6450 (OEM) 1GB
Intro
The GeForce GTX 480 has a core clock frequency of 700 MHz and a GDDR5 memory speed of 924 MHz. It also uses a 384-bit bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 60 TAUs, and 48 ROPs.Compare that to the Radeon HD 6450 (OEM) 1GB, which comes with clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 RAM. It features 160 SPUs as well as 8 TAUs and 4 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) 1GB |
|
31 Watts |
| GeForce GTX 480 |
|
250 Watts |
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Memory Bandwidth
Theoretically speaking, the GeForce GTX 480 should be 516% faster than the Radeon HD 6450 (OEM) 1GB overall, due to its greater bandwidth. (explain)
| GeForce GTX 480 |
|
177408 MB/sec |
| Radeon HD 6450 (OEM) 1GB |
|
28800 MB/sec |
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Texel Rate
The GeForce GTX 480 should be quite a bit (about 600%) better at AF than the Radeon HD 6450 (OEM) 1GB. (explain)| GeForce GTX 480 |
|
42000 Mtexels/sec |
| Radeon HD 6450 (OEM) 1GB |
|
6000 Mtexels/sec |
|
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Pixel Rate
The GeForce GTX 480 is quite a bit (about 1020%) more effective at FSAA than the Radeon HD 6450 (OEM) 1GB, and should be capable of handling higher resolutions more effectively. (explain)| GeForce GTX 480 |
|
33600 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 GTX 480Amazon.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 GTX 480 | Radeon HD 6450 (OEM) 1GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 2010 | February 2011 |
| Code Name | GF100 | Caicos |
| Fab Process | 40 nm | 40 nm |
| Bus | PCIe x16 | PCIe 2.1 x16 |
| Memory | 1536 MB | 1024 MB |
| Core Speed | 700 MHz | 750 MHz |
| Shader Speed | 1401 MHz | (N/A) MHz |
| Memory Speed | 924 MHz (3696 MHz effective) | 900 MHz (3600 MHz effective) |
| Unified Shaders | 480 | 160 |
| Texture Mapping Units | 60 | 8 |
| Render Output Units | 48 | 4 |
| Bus Type | GDDR5 | GDDR5 |
| Bus Width | 384-bit | 64-bit |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
| Power (Max TDP) | 250 watts | 31 watts |
| Shader Model | 5.0 | 5.0 |
| Bandwidth | 177408 MB/sec | 28800 MB/sec |
| Texel Rate | 42000 Mtexels/sec | 6000 Mtexels/sec |
| Pixel Rate | 33600 Mpixels/sec | 3000 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the 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 that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many 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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