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GeForce GT 440 3GB vs Radeon HD 6770

Intro

The GeForce GT 440 3GB features a GPU clock speed of 594 MHz, and the 3072 MB of GDDR3 memory is set to run at 900 MHz through a 192-bit bus. It also is comprised of 144 SPUs, 24 TAUs, and 24 ROPs.

Compare that to the Radeon HD 6770, which comes with GPU core speed of 900 MHz, and 512 MB of GDDR5 RAM running at 1050 MHz through a 128-bit bus. It also features 800 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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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

Theoretically speaking, the Radeon HD 6770 should be 56% faster than the GeForce GT 440 3GB overall, due to 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 is much (more or less 153%) faster with regards to AF 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

The Radeon HD 6770 will be a small bit (more or less 1%) faster with regards to AA than the GeForce GT 440 3GB, and should be able to handle higher resolutions while still performing well. (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 megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 are applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the 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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