 |
 |
GeForce 9800 GX2 vs GeForce GT 240 GDDR5 1GB
Intro
The GeForce 9800 GX2 has a core clock frequency of 600 MHz and a GDDR3 memory frequency of 1000 MHz. It also uses a 256-bit bus, and makes use of a 65 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.Compare all of that to the GeForce GT 240 GDDR5 1GB, which has GPU core speed of 550 MHz, and 1024 MB of GDDR5 RAM set to run at 850 MHz through a 128-bit bus. It also is made up of 96 Stream Processors, 32 TAUs, and 8 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce GT 240 GDDR5 1GB |
|
70 Watts |
| GeForce 9800 GX2 |
|
197 Watts |
|
|
Memory Bandwidth
In theory, the GeForce 9800 GX2 is 135% faster than the GeForce GT 240 GDDR5 1GB overall, because of its greater data rate. (explain)
| GeForce 9800 GX2 |
|
128000 MB/sec |
| GeForce GT 240 GDDR5 1GB |
|
54400 MB/sec |
|
|
Texel Rate
The GeForce 9800 GX2 is quite a bit (more or less 336%) more effective at AF than the GeForce GT 240 GDDR5 1GB. (explain)| GeForce 9800 GX2 |
|
76800 Mtexels/sec |
| GeForce GT 240 GDDR5 1GB |
|
17600 Mtexels/sec |
|
|
Pixel Rate
If running with high levels of AA is important to you, then the GeForce 9800 GX2 is a better choice, by far. (explain)| GeForce 9800 GX2 |
|
19200 Mpixels/sec |
| GeForce GT 240 GDDR5 1GB |
|
4400 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.
One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.
Price Comparison
GeForce 9800 GX2Amazon.com
Check prices at:
|
GeForce GT 240 GDDR5 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.
Specifications
| Model | GeForce 9800 GX2 | GeForce GT 240 GDDR5 1GB |
|---|---|---|
| Manufacturer | nVidia | nVidia |
| Year | Mar 2008 | November 2009 |
| Code Name | G92 | GT215 |
| Memory | 512 MB (x2) | 1024 MB |
| Core Speed | 600 MHz (x2) | 550 MHz |
| Memory Speed | 2000 MHz (x2) | 3400 MHz |
| Power (Max TDP) | 197 watts | 70 watts |
| Bandwidth | 128000 MB/sec | 54400 MB/sec |
| Texel Rate | 76800 Mtexels/sec | 17600 Mtexels/sec |
| Pixel Rate | 19200 Mpixels/sec | 4400 Mpixels/sec |
| Unified Shaders | 128 (x2) | 96 |
| Texture Mapping Units | 64 (x2) | 32 |
| Render Output Units | 16 (x2) | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit (x2) | 128-bit |
| Fab Process | 65 nm | 40 nm |
| Transistors | 754 million | 289 million |
| Bus | PCIe x16 2.0 | PCIe x16 |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher 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 a second.
Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.
GeForce 9800 GX2Amazon.com
Check prices at:
|
GeForce GT 240 GDDR5 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 9800 GX2 vs GeForce GT 240 GDDR5 1GB”[...] GeForce 9800 GX2 vs GeForce GT 240 GDDR5 1GB – Performance …GeForce 9800 GX2 vs GeForce GT 240 GDDR5 1GB. Intro. The GeForce 9800 GX2 makes use of a 65 nm design. … Power (Max TDP), 197 watts, 70 watts … [...]