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GeForce GT 440 3GB vs Radeon HD 6770

Intro

The GeForce GT 440 3GB makes use of a 40 nm design. nVidia has clocked the core frequency at 594 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this specific card. It features 144 SPUs along with 24 TAUs and 24 ROPs.

Compare those specifications to the Radeon HD 6770, which features core speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB 56 Watts
Radeon HD 6770 108 Watts
Difference: 52 Watts (93%)

Memory Bandwidth

In theory, the Radeon HD 6770 will be 56% quicker than the GeForce GT 440 3GB in general, because of its higher data rate. (explain)

Radeon HD 6770 67200 MB/sec
GeForce GT 440 3GB 43200 MB/sec
Difference: 24000 (56%)

Texel Rate

The Radeon HD 6770 should be quite a bit (about 153%) faster with regards to anisotropic filtering than the GeForce GT 440 3GB. (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce GT 440 3GB 14256 Mtexels/sec
Difference: 21744 (153%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 is a better choice, though not by far. (explain)

Radeon HD 6770 14400 Mpixels/sec
GeForce GT 440 3GB 14256 Mpixels/sec
Difference: 144 (1%)

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 3GB

Amazon.com

Check prices at:

Radeon HD 6770

Amazon.com

Check prices at:

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 3GB Radeon HD 6770
Manufacturer nVidia AMD
Year October 2010 January 2011
Code Name GF106 Juniper XT
Memory 3072 MB 512 MB
Core Speed 594 MHz 900 MHz
Memory Speed 1800 MHz 4200 MHz
Power (Max TDP) 56 watts 108 watts
Bandwidth 43200 MB/sec 67200 MB/sec
Texel Rate 14256 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 144 800
Texture Mapping Units 24 40
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GT 440 3GB

Amazon.com

Check prices at:

Radeon HD 6770

Amazon.com

Check prices at:

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.

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