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GeForce GT 420 vs GeForce GT 440 1.5GB
Intro
The GeForce GT 420 features a clock speed of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 48 SPUs, 8 TAUs, and 4 ROPs.Compare those specs to the GeForce GT 440 1.5GB, which uses a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 RAM works at a speed of 900 MHz on this model. It features 144 SPUs along with 24 TAUs and 24 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 420 |
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50 Watts |
| GeForce GT 440 1.5GB |
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56 Watts |
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Memory Bandwidth
As far as performance goes, the GeForce GT 440 1.5GB should in theory be quite a bit superior to the GeForce GT 420 overall. (explain)
| GeForce GT 440 1.5GB |
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43200 MB/sec |
| GeForce GT 420 |
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28800 MB/sec |
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Texel Rate
The GeForce GT 440 1.5GB is a lot (more or less 155%) faster with regards to texture filtering than the GeForce GT 420. (explain)| GeForce GT 440 1.5GB |
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14256 Mtexels/sec |
| GeForce GT 420 |
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5600 Mtexels/sec |
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Pixel Rate
If running with lots of anti-aliasing is important to you, then the GeForce GT 440 1.5GB is a better choice, by a large margin. (explain)| GeForce GT 440 1.5GB |
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14256 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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GeForce GT 440 1.5GBAmazon.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 | GeForce GT 440 1.5GB |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | September 2010 | October 2010 |
| Code Name | GF108 | GF106 |
| Memory | 2048 MB | 1536 MB |
| Core Speed | 700 MHz | 594 MHz |
| Memory Speed | 1800 MHz | 1800 MHz |
| Power (Max TDP) | 50 watts | 56 watts |
| Bandwidth | 28800 MB/sec | 43200 MB/sec |
| Texel Rate | 5600 Mtexels/sec | 14256 Mtexels/sec |
| Pixel Rate | 2800 Mpixels/sec | 14256 Mpixels/sec |
| Unified Shaders | 48 | 144 |
| Texture Mapping Units | 8 | 24 |
| Render Output Units | 4 | 24 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 128-bit | 192-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 585 million | 1170 million |
| Bus | PCIe 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 information (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.
GeForce GT 420Amazon.com
Check prices at:
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GeForce GT 440 1.5GBAmazon.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
2 Responses to “GeForce GT 420 vs GeForce GT 440 1.5GB”[...] (De linkse is die van de Acer, de rechtse van de HP) Hier is de vergelijking van de GPU's: GeForce GT 420 vs GeForce GT 440 1.5GB – Performance Comparison Benchmarks @ Hardware Compare Ik hoop dat jullie me kunnen helpen Jullie mogen ook een andere computer voorstellen met [...]
Err, according to GPU-Z, my GT420 is far faster than the oen in the test, even beating the GT440 in one instance... Here's a screenshot:
http://gpuz.techpowerup.com/11/06/25/d09.png