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GeForce GT 320 vs Radeon HD 4790
Intro
The GeForce GT 320 comes with a clock speed of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 72 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.Compare those specs to the Radeon HD 4790, which makes use of a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR5 memory is set to run at a speed of 800 MHz on this model. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.
Power Usage and Theoretical Benchmarks
Memory Bandwidth
In theory, the Radeon HD 4790 should be 305% quicker than the GeForce GT 320 overall, due to its greater data rate. (explain)
| Radeon HD 4790 |
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102400 MB/sec |
| GeForce GT 320 |
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25280 MB/sec |
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Texel Rate
The Radeon HD 4790 should be a lot (approximately 48%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)| Radeon HD 4790 |
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19200 Mtexels/sec |
| GeForce GT 320 |
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12960 Mtexels/sec |
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Pixel Rate
If using a high resolution is important to you, then the Radeon HD 4790 is the winner, by far. (explain)| Radeon HD 4790 |
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9600 Mpixels/sec |
| GeForce GT 320 |
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4320 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 320Amazon.com
Check prices at:
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Radeon HD 4790Amazon.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 320 | Radeon HD 4790 |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | February 2010 | 2009 |
| Code Name | GT215 | RV790 |
| Memory | 1024 MB | 512 MB |
| Core Speed | 540 MHz | 600 MHz |
| Memory Speed | 1580 MHz | 3200 MHz |
| Power (Max TDP) | 43 watts | (Unknown) watts |
| Bandwidth | 25280 MB/sec | 102400 MB/sec |
| Texel Rate | 12960 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 4320 Mpixels/sec | 9600 Mpixels/sec |
| Unified Shaders | 72 | 640(128x5) |
| Texture Mapping Units | 24 | 32 |
| Render Output Units | 8 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 128-bit | 256-bit |
| Fab Process | 40 nm | 55 nm |
| Transistors | 727 million | 959 million |
| Bus | PCIe x16 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10.1 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.3 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.
Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.
GeForce GT 320Amazon.com
Check prices at:
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Radeon HD 4790Amazon.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.
|
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