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Radeon HD 6450 (OEM) vs Radeon HD 6770 1GB
Intro
The Radeon HD 6450 (OEM) features a core clock speed of 625 MHz and a GDDR3 memory speed of 800 MHz. It also features a 64-bit bus, and makes use of a 40 nm design. It is comprised of 160 SPUs, 8 Texture Address Units, and 4 ROPs.Compare all that to the Radeon HD 6770 1GB, which features a core clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.
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
As far as performance goes, the Radeon HD 6770 1GB should theoretically be a lot superior to the Radeon HD 6450 (OEM) overall. (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 is quite a bit (more or less 620%) more effective at texture 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 a high screen resolution 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 max amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum 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 [...]