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GeForce GT 420 vs Radeon HD 6670 (OEM) 1GB
Intro
The GeForce GT 420 comes with a GPU core speed of 700 MHz, and the 2048 MB of GDDR3 memory is set to run at 900 MHz through a 128-bit bus. It also features 48 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.Compare those specifications to the Radeon HD 6670 (OEM) 1GB, which has a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 420 |
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50 Watts |
| Radeon HD 6670 (OEM) 1GB |
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63 Watts |
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Memory Bandwidth
The Radeon HD 6670 (OEM) 1GB should theoretically be a lot faster than the GeForce GT 420 in general. (explain)
| Radeon HD 6670 (OEM) 1GB |
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64000 MB/sec |
| GeForce GT 420 |
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28800 MB/sec |
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Texel Rate
The Radeon HD 6670 (OEM) 1GB will be a lot (more or less 243%) more effective at anisotropic filtering than the GeForce GT 420. (explain)| Radeon HD 6670 (OEM) 1GB |
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19200 Mtexels/sec |
| GeForce GT 420 |
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5600 Mtexels/sec |
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Pixel Rate
The Radeon HD 6670 (OEM) 1GB should be a lot (approximately 129%) faster with regards to FSAA than the GeForce GT 420, and also should be able to handle higher resolutions while still performing well. (explain)| Radeon HD 6670 (OEM) 1GB |
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6400 Mpixels/sec |
| GeForce GT 420 |
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2800 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
GeForce GT 420Amazon.com
Check prices at:
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Radeon HD 6670 (OEM) 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 | GeForce GT 420 | Radeon HD 6670 (OEM) 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | September 2010 | February 2011 |
| Code Name | GF108 | Turks |
| Memory | 2048 MB | 1024 MB |
| Core Speed | 700 MHz | 800 MHz |
| Memory Speed | 1800 MHz | 4000 MHz |
| Power (Max TDP) | 50 watts | 63 watts |
| Bandwidth | 28800 MB/sec | 64000 MB/sec |
| Texel Rate | 5600 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 2800 Mpixels/sec | 6400 Mpixels/sec |
| Unified Shaders | 48 | 480 |
| Texture Mapping Units | 8 | 24 |
| Render Output Units | 4 | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 585 million | 715 million |
| Bus | PCIe x16 | PCIe 2.1 x16 |
| DirectX Version | DirectX 11 | DirectX 11 |
| OpenGL Version | OpenGL 4.1 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.
GeForce GT 420Amazon.com
Check prices at:
|
Radeon HD 6670 (OEM) 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 “GeForce GT 420 vs Radeon HD 6670 (OEM) 1GB”[...] oder ist es die CPU, die zu schwach ist? Eine HD 6670 ist zwar nicht superschnell, allerdings (theoretisch) sehr viel schneller als deine Alte, praktisch hab ich nur die GT430 und die HD 6670 im gleichen [...]