Hd 6670 vs gts 250

Hd 6670 vs gts 250

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%)

Memory Bandwidth

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%)

Texel Rate

GeForce GTS 250 1GB 47232 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 28032 (146%)

Pixel Rate

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

Check prices at:

Radeon HD 6670 (OEM)

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.


GeForce GTS 250 1GB Radeon HD 6670 (OEM)

nVidia AMD

March 3, 2009 February 2011
Code Name

G92a/b Turks

1024 MB 512 MB
Core Speed

738 MHz 800 MHz
Memory Speed

2200 MHz 4000 MHz
Power (Max TDP)

145 watts 63 watts

70400 MB/sec 64000 MB/sec
Texel Rate

47232 Mtexels/sec 19200 Mtexels/sec
Pixel Rate

11808 Mpixels/sec 6400 Mpixels/sec
Unified Shaders

128 480
Texture Mapping Units

64 24
Render Output Units

16 8
Bus Type

Bus Width

256-bit 128-bit
Fab Process

65/55 nm 40 nm

754 million 715 million

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.

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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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