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Radeon HD 6450 (OEM) vs Radeon HD 6770 1GB
Intro
The Radeon HD 6450 (OEM) has core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs along with 8 TAUs and 4 Rasterization Operator Units.Compare all that to the Radeon HD 6770 1GB, which has a clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 800 SPUs, 40 Texture Address Units, 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
The Radeon HD 6770 1GB should theoretically be a lot faster than 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 should be much (about 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 using high levels of AA is important to you, then the Radeon HD 6770 1GB is a better choice, by a large margin. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 per second. This figure is calculated by multiplying the total texture units by the core 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 per second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a 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 - sometimes also referred to as 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to 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 [...]