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GeForce 8800 GTS (G92) vs Radeon HD 4890 1GB
Intro
The GeForce 8800 GTS (G92) uses a 65 nm design. nVidia has set the core speed at 650 MHz. The GDDR3 memory works at a speed of 970 MHz on this particular model. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.Compare those specs to the Radeon HD 4890 1GB, which features a core clock speed of 1000 MHz and a GDDR5 memory speed of 975 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| GeForce 8800 GTS (G92) |
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135 Watts |
| Radeon HD 4890 1GB |
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190 Watts |
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Memory Bandwidth
Performance-wise, the Radeon HD 4890 1GB should theoretically be a lot superior to the GeForce 8800 GTS (G92) overall. (explain)
| Radeon HD 4890 1GB |
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124800 MB/sec |
| GeForce 8800 GTS (G92) |
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62080 MB/sec |
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Texel Rate
The GeForce 8800 GTS (G92) should be just a bit (more or less 4%) better at texture filtering than the Radeon HD 4890 1GB. (explain)| GeForce 8800 GTS (G92) |
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41600 Mtexels/sec |
| Radeon HD 4890 1GB |
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40000 Mtexels/sec |
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Pixel Rate
If using high levels of AA is important to you, then the Radeon HD 4890 1GB is superior to the GeForce 8800 GTS (G92), by far. (explain)| Radeon HD 4890 1GB |
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16000 Mpixels/sec |
| GeForce 8800 GTS (G92) |
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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 8800 GTS (G92)Amazon.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 8800 GTS (G92) | Radeon HD 4890 1GB |
|---|---|---|
| Manufacturer | nVidia | AMD |
| Year | Dec 2007 | Apr 2, 2009 |
| Code Name | G92 | RV790 XT |
| Memory | 512 MB | 1024 MB |
| Core Speed | 650 MHz | 1000 MHz |
| Memory Speed | 1940 MHz | 3900 MHz |
| Power (Max TDP) | 135 watts | 190 watts |
| Bandwidth | 62080 MB/sec | 124800 MB/sec |
| Texel Rate | 41600 Mtexels/sec | 40000 Mtexels/sec |
| Pixel Rate | 10400 Mpixels/sec | 16000 Mpixels/sec |
| Unified Shaders | 128 | 800(160x5) |
| Texture Mapping Units | 64 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 256-bit |
| Fab Process | 65 nm | 55 nm |
| Transistors | 754 million | 959 million |
| Bus | PCIe x16 2.0 | PCIe 2.0 x16 |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.
GeForce 8800 GTS (G92)Amazon.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 8800 GTS (G92) vs Radeon HD 4890 1GB”[...] show how much better the 4890 is over the 8800GTS... http://www.hwcompare.com/2232/geforc...n-hd-4890-1gb/ and the 4870X2... http://www.hwcompare.com/4545/geforc...on-hd-4870-x2/ The 4870X2 is faster than [...]