 |
 |
GeForce GT 320 vs GeForce GT 420
Intro
The GeForce GT 320 comes with a GPU core clock speed of 540 MHz, and the 1024 MB of GDDR3 memory runs at 790 MHz through a 128-bit bus. It also is comprised of 72 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.Compare those specifications to the GeForce GT 420, which has a core clock speed of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It features 48 SPUs, 8 TAUs, and 4 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 320 |
|
43 Watts |
| GeForce GT 420 |
|
50 Watts |
|
|
Memory Bandwidth
In theory, the GeForce GT 420 should be 14% quicker than the GeForce GT 320 in general, because of its higher data rate. (explain)
| GeForce GT 420 |
|
28800 MB/sec |
| GeForce GT 320 |
|
25280 MB/sec |
|
|
Texel Rate
The GeForce GT 320 will be a lot (approximately 131%) faster with regards to AF 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 screen resolution is important to you, then the GeForce GT 320 is superior to the GeForce GT 420, by far. (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: Memory bandwidth is the max amount of data (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total 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 in a 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. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum 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 [...]