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Radeon HD 6450 (OEM) vs Radeon HD 6770 1GB
Intro
The Radeon HD 6450 (OEM) uses a 40 nm design. AMD has clocked the core frequency at 625 MHz. The GDDR3 memory is set to run at a frequency of 800 MHz on this particular card. It features 160 SPUs along with 8 TAUs and 4 Rasterization Operator Units.Compare that to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1050 MHz on this particular card. It features 800 SPUs along with 40 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6450 (OEM) |
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31 Watts |
| Radeon HD 6770 1GB |
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108 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 6770 1GB should theoretically be much better than the Radeon HD 6450 (OEM) in general. (explain)
| Radeon HD 6770 1GB |
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67200 MB/sec |
| Radeon HD 6450 (OEM) |
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12800 MB/sec |
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Texel Rate
The Radeon HD 6770 1GB will be quite a bit (approximately 620%) better at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)| Radeon HD 6770 1GB |
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36000 Mtexels/sec |
| Radeon HD 6450 (OEM) |
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5000 Mtexels/sec |
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Pixel Rate
If running with lots of anti-aliasing is important to you, then the Radeon HD 6770 1GB is the winner, by far. (explain)| Radeon HD 6770 1GB |
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14400 Mpixels/sec |
| Radeon HD 6450 (OEM) |
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2500 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 6450 (OEM)Amazon.com
Check prices at:
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Radeon HD 6770 1GBAmazon.com
Check prices at:
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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 6450 (OEM) | Radeon HD 6770 1GB |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | February 2011 | January 2011 |
| Code Name | Caicos | Juniper XT |
| Memory | 512 MB | 1024 MB |
| Core Speed | 625 MHz | 900 MHz |
| Memory Speed | 1600 MHz | 4200 MHz |
| Power (Max TDP) | 31 watts | 108 watts |
| Bandwidth | 12800 MB/sec | 67200 MB/sec |
| Texel Rate | 5000 Mtexels/sec | 36000 Mtexels/sec |
| Pixel Rate | 2500 Mpixels/sec | 14400 Mpixels/sec |
| Unified Shaders | 160 | 800 |
| Texture Mapping Units | 8 | 40 |
| Render Output Units | 4 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 64-bit | 128-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 370 million | 1040 million |
| Bus | PCIe 2.1 x16 | PCIe x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, 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 maximum number of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.
Radeon HD 6450 (OEM)Amazon.com
Check prices at:
|
Radeon HD 6770 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.
|
Comments
One Response to “Radeon HD 6450 (OEM) vs Radeon HD 6770 1GB”[...] houd dat ik geheugen en videokaart later nog kan upgraden. Ik heb de videokaarten vergeleken op Radeon HD 6450 (OEM) vs Radeon HD 6770 1GB – Performance Comparison Benchmarks @ Hardware Comp... daar heb ik alle videokaarten die hier tussen staan met mekaar vergeleken en de Radeon HD 6850 was [...]