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GeForce GTX 280 vs Radeon HD 4890 1GB
Intro
The GeForce GTX 280 has a core clock speed of 602 MHz and a GDDR3 memory frequency of 1107 MHz. It also uses a 512-bit bus, and uses a 65 nm design. It is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.Compare that to the Radeon HD 4890 1GB, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 975 MHz through a 256-bit bus. It also is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4890 1GB |
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190 Watts |
| GeForce GTX 280 |
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236 Watts |
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Memory Bandwidth
Performance-wise, the GeForce GTX 280 should theoretically be a small bit superior to the Radeon HD 4890 1GB in general. (explain)
| GeForce GTX 280 |
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141696 MB/sec |
| Radeon HD 4890 1GB |
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124800 MB/sec |
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Texel Rate
The GeForce GTX 280 should be a little bit (more or less 20%) faster with regards to texture filtering than the Radeon HD 4890 1GB. (explain)| GeForce GTX 280 |
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48160 Mtexels/sec |
| Radeon HD 4890 1GB |
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40000 Mtexels/sec |
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Pixel Rate
The GeForce GTX 280 should be a bit (about 20%) faster with regards to AA than the Radeon HD 4890 1GB, and also will be capable of handling higher resolutions more effectively. (explain)| GeForce GTX 280 |
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19264 Mpixels/sec |
| Radeon HD 4890 1GB |
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16000 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 GTX 280Amazon.com
Check prices at:
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Radeon HD 4890 1GBAmazon.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 GTX 280 | Radeon HD 4890 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | June 17, 2008 | Apr 2, 2009 |
| Code Name | G200 | RV790 XT |
| Memory | 1024 MB | 1024 MB |
| Core Speed | 602 MHz | 1000 MHz |
| Memory Speed | 2214 MHz | 3900 MHz |
| Power (Max TDP) | 236 watts | 190 watts |
| Bandwidth | 141696 MB/sec | 124800 MB/sec |
| Texel Rate | 48160 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 19264 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 240 | 800(160x5) |
| Texture Mapping Units | 80 | 40 |
| Render Output Units | 32 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 512-bit | 256-bit |
| Fab Process | 65 nm | 55 nm |
| Transistors | 1400 million | 959 million |
| Bus | PCIe x16 2.0 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.1 | OpenGL 3.0 |
Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred 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 it uses DDR memory, it should be multiplied by 2 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce GTX 280Amazon.com
Check prices at:
|
Radeon HD 4890 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 GTX 280 vs Radeon HD 4890 1GB”[...] dap...din pacate pentru cei care au ales 4890 m-am axat pe evga gtx 280 sc maine dau avansul ,iar luni/marti ajunge la mine ,din ce am vorbit cu ,el,vanzatorul este expert in [...]