 |
 |
GeForce GT 320 vs GeForce GT 420
Intro
The GeForce GT 320 has a clock speed of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It is comprised of 72 SPUs, 24 TAUs, and 8 Raster Operation Units.Compare all of that to the GeForce GT 420, which uses a 40 nm design. nVidia has clocked the core frequency at 700 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this card. It features 48 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 320 |
|
43 Watts |
| GeForce GT 420 |
|
50 Watts |
|
|
Memory Bandwidth
The GeForce GT 420 should in theory be a little bit faster than the GeForce GT 320 in general. (explain)
| GeForce GT 420 |
|
28800 MB/sec |
| GeForce GT 320 |
|
25280 MB/sec |
|
|
Texel Rate
The GeForce GT 320 is much (approximately 131%) faster with regards to texture filtering than the GeForce GT 420. (explain)| GeForce GT 320 |
|
12960 Mtexels/sec |
| GeForce GT 420 |
|
5600 Mtexels/sec |
|
|
Pixel Rate
If running with a high resolution is important to you, then the GeForce GT 320 is a better choice, and very much so. (explain)| GeForce GT 320 |
|
4320 Mpixels/sec |
| GeForce GT 420 |
|
2800 Mpixels/sec |
|
|
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 320Amazon.com
Check prices at:
|
GeForce GT 420Amazon.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.
Specifications
| Model | GeForce GT 320 | GeForce GT 420 |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | February 2010 | September 2010 |
| Code Name | GT215 | GF108 |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 540 MHz | 700 MHz |
| Memory Speed | 1580 MHz | 1800 MHz |
| Power (Max TDP) | 43 watts | 50 watts |
| Bandwidth | 25280 MB/sec | 28800 MB/sec |
| Texel Rate | 12960 Mtexels/sec | 5600 Mtexels/sec |
| Pixel Rate | 4320 Mpixels/sec | 2800 Mpixels/sec |
| Unified Shaders | 72 | 48 |
| Texture Mapping Units | 24 | 8 |
| Render Output Units | 8 | 4 |
| Bus Type | GDDR3 | GDDR3 |
| Bus Width | 128-bit | 128-bit |
| Fab Process | 40 nm | 40 nm |
| Transistors | 727 million | 585 million |
| Bus | PCIe x16 | PCIe x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.3 | OpenGL 4.1 |
Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of 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 320Amazon.com
Check prices at:
|
GeForce GT 420Amazon.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 320 vs GeForce GT 420”[...] grote fout van Bol.com daar een GT420 slechtere prestaties neerzet dan een GT320 Kijk zelf maar GeForce GT 320 vs GeForce GT 420 PassMark - GeForce GT 320 PassMark - GeForce GT [...]