AMD Radeon HD 6670
- 800 MHz
- 1 GB GDDR5
Perhaps targeting that segment while maintaining some feature-set cushion with "100% DirectX 11 compliance," AMD is releasing its new Radeon HD 6670 graphics card.
ZOTAC GeForce GTS 250
- 750 MHz
- 1 GB GDDR3
To find the maximum overclock of our card we used a combination of ATITool’s successor, Furmark and our benchmarking suite.
Compare those specifications to the Radeon HD 6670 (OEM), which comes with GPU clock speed of 800 MHz, and 512 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP )
|Radeon HD 6670 (OEM)||63 Watts|
|GeForce GTS 250 1GB||145 Watts|
|Difference: 82 Watts (130%)|
Performance-wise, the GeForce GTS 250 1GB should in theory be just a bit superior to the Radeon HD 6670 (OEM) overall. (explain)
|GeForce GTS 250 1GB||70400 MB/sec|
|Radeon HD 6670 (OEM)||64000 MB/sec|
|Difference: 6400 (10%)|
|GeForce GTS 250 1GB||47232 Mtexels/sec|
|Radeon HD 6670 (OEM)||19200 Mtexels/sec|
|Difference: 28032 (146%)|
|GeForce GTS 250 1GB||11808 Mpixels/sec|
|Radeon HD 6670 (OEM)||6400 Mpixels/sec|
|Difference: 5408 (85%)|
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.
GeForce GTS 250 1GB
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Radeon HD 6670 (OEM)
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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.
|Model||GeForce GTS 250 1GB||Radeon HD 6670 (OEM)|
|Year||March 3, 2009||February 2011|
|Memory||1024 MB||512 MB|
|Core Speed||738 MHz||800 MHz|
|Memory Speed||2200 MHz||4000 MHz|
|Power (Max TDP)||145 watts||63 watts|
|Bandwidth||70400 MB/sec||64000 MB/sec|
|Texel Rate||47232 Mtexels/sec||19200 Mtexels/sec|
|Pixel Rate||11808 Mpixels/sec||6400 Mpixels/sec|
|Texture Mapping Units||64||24|
|Render Output Units||16||8|
|Fab Process||65/55 nm||40 nm|
|Transistors||754 million||715 million|
|Bus||PCIe x16 2.0||PCIe 2.1 x16|
|DirectX Version||DirectX 10||DirectX 11|
|OpenGL Version||OpenGL 3.1||OpenGL 4.1|
Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure 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 processed in one second.
Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second — measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card’s clock speed. ROPs (Raster Operations Pipelines — sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card — the lower the bandwidth is, the lower the ability to reach the max fill rate.
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