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GeForce 9600 GT 1GB vs GeForce GT 640 DDR3
Intro
The GeForce 9600 GT 1GB uses a 65/55 nm design. nVidia has set the core frequency at 650 MHz. The GDDR3 RAM runs at a frequency of 900 MHz on this card. It features 64 SPUs as well as 32 TAUs and 16 ROPs.Compare all that to the GeForce GT 640 DDR3, which comes with a core clock speed of 900 MHz and a DDR3 memory speed of 1782 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 640 DDR3 |
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65 Watts |
| GeForce 9600 GT 1GB |
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95 Watts |
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Memory Bandwidth
In theory, the GeForce 9600 GT 1GB is 1% quicker than the GeForce GT 640 DDR3 overall, due to its higher data rate. (explain)
| GeForce 9600 GT 1GB |
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57600 MB/sec |
| GeForce GT 640 DDR3 |
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57024 MB/sec |
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Texel Rate
The GeForce GT 640 DDR3 should be much (more or less 38%) better at anisotropic filtering than the GeForce 9600 GT 1GB. (explain)| GeForce GT 640 DDR3 |
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28800 Mtexels/sec |
| GeForce 9600 GT 1GB |
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20800 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the GeForce GT 640 DDR3 is a better choice, by a large margin. (explain)| GeForce GT 640 DDR3 |
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14400 Mpixels/sec |
| GeForce 9600 GT 1GB |
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10400 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 9600 GT 1GBAmazon.com
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GeForce GT 640 DDR3Amazon.com
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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 9600 GT 1GB | GeForce GT 640 DDR3 |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | Feb 2008 | June 2012 |
| Code Name | G94a/b | GK107 |
| Memory | 1024 MB | 2048 MB |
| Core Speed | 650 MHz | 900 MHz |
| Memory Speed | 1800 MHz | 3564 MHz |
| Power (Max TDP) | 95 watts | 65 watts |
| Bandwidth | 57600 MB/sec | 57024 MB/sec |
| Texel Rate | 20800 Mtexels/sec | 28800 Mtexels/sec |
| Pixel Rate | 10400 Mpixels/sec | 14400 Mpixels/sec |
| Unified Shaders | 64 | 384 |
| Texture Mapping Units | 32 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | DDR3 |
| Bus Width | 256-bit | 128-bit |
| Fab Process | 65/55 nm | 28 nm |
| Transistors | 505 million | 1300 million |
| Bus | PCIe x16 2.0 | PCIe 3.0 x16 |
| DirectX Version | DirectX 10 | DirectX 11.0 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.
Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
GeForce 9600 GT 1GBAmazon.com
Check prices at:
|
GeForce GT 640 DDR3Amazon.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 9600 GT 1GB vs GeForce GT 640 DDR3”I have a 2009 Mac Book Pro that has a GT9600 graphics card. Comparing it to the newer GT640 I wondered if the difference in performance justified the expense in switching. Evidently not. I am mainly into digital graphics and beginning photography.
Na minha opiniao gt 640 e melhor no geral.