 |
 |
|
|
|
GeForce GTS 250 512MB vs Radeon HD 6670 (OEM) 1GB
Intro
The GeForce GTS 250 512MB uses a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM runs at a frequency of 1100 MHz on this specific model. It features 128 SPUs along with 64 TAUs and 16 Rasterization Operator Units.Compare those specs to the Radeon HD 6670 (OEM) 1GB, which makes use of a 40 nm design. ATi has clocked the core speed at 800 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this particular card. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 6670 (OEM) 1GB |
|
63 Watts |
| GeForce GTS 250 512MB |
|
145 Watts |
|
|
Memory Bandwidth
In theory, the GeForce GTS 250 512MB should be 10% faster than the Radeon HD 6670 (OEM) 1GB overall, because of its higher data rate. (explain)
| GeForce GTS 250 512MB |
|
70400 MB/sec |
| Radeon HD 6670 (OEM) 1GB |
|
64000 MB/sec |
|
|
Texel Rate
The GeForce GTS 250 512MB will be a lot (about 146%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)| GeForce GTS 250 512MB |
|
47232 Mtexels/sec |
| Radeon HD 6670 (OEM) 1GB |
|
19200 Mtexels/sec |
|
|
Pixel Rate
The GeForce GTS 250 512MB will be much (more or less 85%) more effective at anti-aliasing than the Radeon HD 6670 (OEM) 1GB, and also will be able to handle higher screen resolutions without losing too much performance. (explain)| GeForce GTS 250 512MB |
|
11808 Mpixels/sec |
| Radeon HD 6670 (OEM) 1GB |
|
6400 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 GTS 250 512MBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Radeon HD 6670 (OEM) 1GBAmazon.com
Other US-based stores
Amazon.co.uk
Amazon.de
Amazon.fr
|
Specifications
| Model | GeForce GTS 250 512MB | Radeon HD 6670 (OEM) 1GB |
|---|---|---|
| Manufacturer | nVidia | ATi |
| Year | March 3, 2009 | February 2011 |
| Code Name | G92a/b | Turks |
| Fab Process | 65/55 nm | 40 nm |
| Bus | PCIe x16 2.0 | PCIe 2.1 x16 |
| Memory | 512 MB | 1024 MB |
| Core Speed | 738 MHz | 800 MHz |
| Shader Speed | 1836 MHz | (N/A) MHz |
| Memory Speed | 1100 MHz | 1000 MHz |
| Unified Shaders | 128 | 480 |
| Texture Mapping Units | 64 | 24 |
| Render Output Units | 16 | 8 |
| Bus Type | GDDR3 | GDDR5 |
| Bus Width | 256-bit | 128-bit |
| DirectX Version | DirectX 10 | DirectX 11 |
| OpenGL Version | OpenGL 3.1 | OpenGL 4.1 |
| Power (Max TDP) | 145 watts | 63 watts |
| Shader Model | 4.0 | 5.0 |
| Bandwidth | 70400 MB/sec | 64000 MB/sec |
| Texel Rate | 47232 Mtexels/sec | 19200 Mtexels/sec |
| Pixel Rate | 11808 Mpixels/sec | 6400 Mpixels/sec |
Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.
Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, 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 most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.
Comments
Be the first to leave a comment!