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GeForce 9800 GTX+ vs Radeon HD 4830 1GB
Intro
The GeForce 9800 GTX+ comes with a core clock speed of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also makes use of a 256-bit bus, and uses a 55 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.Compare those specs to the Radeon HD 4830 1GB, which has GPU core speed of 575 MHz, and 1024 MB of GDDR4 memory running at 900 MHz through a 256-bit bus. It also is comprised of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 4830 1GB |
|
95 Watts |
| GeForce 9800 GTX+ |
|
145 Watts |
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Memory Bandwidth
The GeForce 9800 GTX+ should theoretically perform much faster than the Radeon HD 4830 1GB overall. (explain)
| GeForce 9800 GTX+ |
|
70400 MB/sec |
| Radeon HD 4830 1GB |
|
57600 MB/sec |
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Texel Rate
The GeForce 9800 GTX+ will be quite a bit (more or less 157%) faster with regards to AF than the Radeon HD 4830 1GB. (explain)| GeForce 9800 GTX+ |
|
47232 Mtexels/sec |
| Radeon HD 4830 1GB |
|
18400 Mtexels/sec |
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Pixel Rate
If using a high screen resolution is important to you, then the GeForce 9800 GTX+ is superior to the Radeon HD 4830 1GB, and very much so. (explain)| GeForce 9800 GTX+ |
|
11808 Mpixels/sec |
| Radeon HD 4830 1GB |
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9200 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
Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.
GeForce 9800 GTX+Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Radeon HD 4830 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
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Specifications
| Model | GeForce 9800 GTX+ | Radeon HD 4830 1GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | July 2008 | Oct 21, 2008 |
| Code Name | G92b | RV770 LE |
| Fab Process | 55 nm | 55 nm |
| Bus | PCIe x16 2.0 | PCIe 2.0 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 738 MHz | 575 MHz |
| Shader Speed | 1836 MHz | (N/A) MHz |
| Memory Speed | 1100 MHz | 900 MHz |
| Unified Shaders | 128 | 640(128x5) |
| Texture Mapping Units | 64 | 32 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR4 |
| Bus Width | 256-bit | 256-bit |
| DirectX Version | DirectX 10 | DirectX 10.1 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.0 |
| Power (Max TDP) | 145 watts | 95 watts |
| Shader Model | 4.0 | 4.1 |
| Bandwidth | 70400 MB/sec | 57600 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 18400 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 9200 Mpixels/sec |
Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.
Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.
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