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GeForce GT 440 3GB vs Radeon HD 4770

Intro

The GeForce GT 440 3GB has 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 Stream Processors, 24 Texture Address Units, and 24 Raster Operation Units.

Compare that to the Radeon HD 4770, which features a clock frequency of 750 MHz and a GDDR5 memory frequency of 800 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is comprised of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB 56 Watts
Radeon HD 4770 80 Watts
Difference: 24 Watts (43%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4770 should be 19% faster than the GeForce GT 440 3GB in general, due to its higher data rate. (explain)

Radeon HD 4770 51200 MB/sec
GeForce GT 440 3GB 43200 MB/sec
Difference: 8000 (19%)

Texel Rate

The Radeon HD 4770 should be much (more or less 68%) more effective at AF than the GeForce GT 440 3GB. (explain)

Radeon HD 4770 24000 Mtexels/sec
GeForce GT 440 3GB 14256 Mtexels/sec
Difference: 9744 (68%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 440 3GB is the winner, though only just barely. (explain)

GeForce GT 440 3GB 14256 Mpixels/sec
Radeon HD 4770 12000 Mpixels/sec
Difference: 2256 (19%)

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 4770

Amazon.com

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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.

Specifications

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Model GeForce GT 440 3GB Radeon HD 4770
Manufacturer nVidia AMD
Year October 2010 Apr 28, 2009
Code Name GF106 RV740
Memory 3072 MB 512 MB
Core Speed 594 MHz 750 MHz
Memory Speed 1800 MHz 3200 MHz
Power (Max TDP) 56 watts 80 watts
Bandwidth 43200 MB/sec 51200 MB/sec
Texel Rate 14256 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 14256 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 144 640(128x5)
Texture Mapping Units 24 32
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 192-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 826 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 440 3GB

Amazon.com

Check prices at:

Radeon HD 4770

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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