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Radeon HD 4550 256MB vs Radeon HD 6750 1GB
Intro
The Radeon HD 4550 256MB has a clock frequency of 600 MHz and a DDR3 memory frequency of 800 MHz. It also features a 64-bit memory bus, and makes use of a 55 nm design. It is comprised of 80(16x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.Compare those specs to the Radeon HD 6750 1GB, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this specific card. It features 720 SPUs along with 36 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4550 256MB |
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25 Watts |
| Radeon HD 6750 1GB |
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86 Watts |
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Memory Bandwidth
Theoretically speaking, the Radeon HD 6750 1GB should be much faster than the Radeon HD 4550 256MB overall. (explain)
| Radeon HD 6750 1GB |
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64000 MB/sec |
| Radeon HD 4550 256MB |
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12800 MB/sec |
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Texel Rate
The Radeon HD 6750 1GB should be much (more or less 444%) more effective at anisotropic filtering than the Radeon HD 4550 256MB. (explain)| Radeon HD 6750 1GB |
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26100 Mtexels/sec |
| Radeon HD 4550 256MB |
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4800 Mtexels/sec |
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Pixel Rate
If running with a high screen resolution is important to you, then the Radeon HD 6750 1GB is the winner, and very much so. (explain)| Radeon HD 6750 1GB |
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11600 Mpixels/sec |
| Radeon HD 4550 256MB |
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2400 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
Radeon HD 4550 256MBAmazon.com
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Radeon HD 6750 1GBAmazon.com
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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
Specifications
| Model | Radeon HD 4550 256MB | Radeon HD 6750 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 30, 2008 | January 2011 |
| Code Name | RV710 | Juniper Pro |
| Memory | 256 MB | 1024 MB |
| Core Speed | 600 MHz | 725 MHz |
| Memory Speed | 1600 MHz | 4000 MHz |
| Power (Max TDP) | 25 watts | 86 watts |
| Bandwidth | 12800 MB/sec | 64000 MB/sec |
| Texel Rate | 4800 Mtexels/sec | 26100 Mtexels/sec |
| Pixel Rate | 2400 Mpixels/sec | 11600 Mpixels/sec |
| Unified Shaders | 80(16x5) | 720 |
| Texture Mapping Units | 8 | 36 |
| Render Output Units | 4 | 16 |
| Bus Type | DDR3 | GDDR5 |
| Bus Width | 64-bit | 128-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 242 million | 1040 million |
| Bus | PCIe 2.0 x16 | PCIe x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.
Radeon HD 4550 256MBAmazon.com
Check prices at:
|
Radeon HD 6750 1GBAmazon.com
Check prices at:
|
Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.
|
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