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GeForce GT 440 1.5GB vs Radeon HD 6670 (OEM)

Intro

The GeForce GT 440 1.5GB comes with a core clock frequency of 594 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 192-bit memory bus, and uses a 40 nm design. It features 144 SPUs, 24 TAUs, and 24 ROPs.

Compare those specifications to the Radeon HD 6670 (OEM), which has GPU core speed of 800 MHz, and 512 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also is made up of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB 56 Watts
Radeon HD 6670 (OEM) 63 Watts
Difference: 7 Watts (13%)

Memory Bandwidth

The Radeon HD 6670 (OEM) should theoretically perform quite a bit faster than the GeForce GT 440 1.5GB overall. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
GeForce GT 440 1.5GB 43200 MB/sec
Difference: 20800 (48%)

Texel Rate

The Radeon HD 6670 (OEM) should be quite a bit (more or less 35%) better at anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

Radeon HD 6670 (OEM) 19200 Mtexels/sec
GeForce GT 440 1.5GB 14256 Mtexels/sec
Difference: 4944 (35%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 440 1.5GB is superior to the Radeon HD 6670 (OEM), by a large margin. (explain)

GeForce GT 440 1.5GB 14256 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 7856 (123%)

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

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GeForce GT 440 1.5GB

Amazon.com

Radeon HD 6670 (OEM)

Amazon.com

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.

Specifications

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Model GeForce GT 440 1.5GB Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year October 2010 February 2011
Code Name GF106 Turks
Memory 1536 MB 512 MB
Core Speed 594 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 56 watts 63 watts
Bandwidth 43200 MB/sec 64000 MB/sec
Texel Rate 14256 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 144 480
Texture Mapping Units 24 24
Render Output Units 24 8
Bus Type GDDR3 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 715 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred across 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 better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

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