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GeForce 8600 GT 256MB DDR2 vs Radeon HD 5450
Intro
The GeForce 8600 GT 256MB DDR2 comes with a GPU core clock speed of 540 MHz, and the 256 MB of DDR2 memory is set to run at 400 MHz through a 128-bit bus. It also features 32 SPUs, 16 Texture Address Units, and 8 ROPs.Compare all that to the Radeon HD 5450, which comes with a core clock speed of 650 MHz and a DDR3 memory frequency of 800 MHz. It also features a 64-bit memory bus, and uses a 40 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5450 |
|
19 Watts |
| GeForce 8600 GT 256MB DDR2 |
|
47 Watts |
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Memory Bandwidth
Both cards have exactly the same memory bandwidth, so in theory they should have identical performance. (explain)
Texel Rate
The GeForce 8600 GT 256MB DDR2 should be much (more or less 66%) more effective at anisotropic filtering than the Radeon HD 5450. (explain)| GeForce 8600 GT 256MB DDR2 |
|
8640 Mtexels/sec |
| Radeon HD 5450 |
|
5200 Mtexels/sec |
|
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Pixel Rate
The GeForce 8600 GT 256MB DDR2 will be quite a bit (about 66%) better at anti-aliasing than the Radeon HD 5450, and also will be capable of handling higher screen resolutions more effectively. (explain)| GeForce 8600 GT 256MB DDR2 |
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4320 Mpixels/sec |
| Radeon HD 5450 |
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2600 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 8600 GT 256MB DDR2Amazon.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 8600 GT 256MB DDR2 | Radeon HD 5450 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | April 2007 | February 4, 2010 |
| Code Name | G84 | Cedar PRO |
| Fab Process | 80 nm | 40 nm |
| Bus | PCIe x16 | PCIe 2.1 x16 |
| Memory | 256 MB | 512 MB |
| Core Speed | 540 MHz | 650 MHz |
| Shader Speed | 1180 MHz | (N/A) MHz |
| Memory Speed | 400 MHz (800 MHz effective) | 800 MHz (1600 MHz effective) |
| Unified Shaders | 32 | 80(16x5) |
| Texture Mapping Units | 16 | 8 |
| Render Output Units | 8 | 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) | 47 watts | 19 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 12800 MB/sec | 12800 MB/sec |
| Texel Rate | 8640 Mtexels/sec | 5200 Mtexels/sec |
| Pixel Rate | 4320 Mpixels/sec | 2600 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.
Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.
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