 |
 |
|
|
|
GeForce 9800 GTX+ vs Radeon HD 6770
Intro
The GeForce 9800 GTX+ comes with a clock frequency of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also features a 256-bit bus, and uses a 55 nm design. It features 128 SPUs, 64 TAUs, and 16 Raster Operation Units.Compare all that to the Radeon HD 6770, which has core speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 RAM. It features 800 SPUs as well as 40 Texture Address Units and 16 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6770 |
|
108 Watts |
| GeForce 9800 GTX+ |
|
145 Watts |
|
|
Memory Bandwidth
Performance-wise, the GeForce 9800 GTX+ should theoretically be a small bit superior to the Radeon HD 6770 in general. (explain)
| GeForce 9800 GTX+ |
|
70400 MB/sec |
| Radeon HD 6770 |
|
67200 MB/sec |
|
|
Texel Rate
The GeForce 9800 GTX+ is much (about 31%) faster with regards to texture filtering than the Radeon HD 6770. (explain)| GeForce 9800 GTX+ |
|
47232 Mtexels/sec |
| Radeon HD 6770 |
|
36000 Mtexels/sec |
|
|
Pixel Rate
The Radeon HD 6770 will be quite a bit (about 22%) better at FSAA than the GeForce 9800 GTX+, and also will be capable of handling higher screen resolutions better. (explain)| Radeon HD 6770 |
|
14400 Mpixels/sec |
| GeForce 9800 GTX+ |
|
11808 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.
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
|
Radeon HD 6770Amazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model | GeForce 9800 GTX+ | Radeon HD 6770 |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | July 2008 | January 2011 |
| Code Name | G92b | Juniper XT |
| Fab Process | 55 nm | 40 nm |
| Bus | PCIe x16 2.0 | PCIe x16 |
| Memory | 512 MB | 512 MB |
| Core Speed | 738 MHz | 900 MHz |
| Shader Speed | 1836 MHz | (N/A) MHz |
| Memory Speed | 1100 MHz | 1050 MHz |
| Unified Shaders | 128 | 800 |
| Texture Mapping Units | 64 | 40 |
| Render Output Units | 16 | 16 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 4.1 |
| Power (Max TDP) | 145 watts | 108 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 70400 MB/sec | 67200 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 36000 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 14400 Mpixels/sec |
Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 are applied in one second. This number is calculated by multiplying the total amount 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 one second.
Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
Comments
Be the first to leave a comment!