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GeForce GT 440 3GB vs Radeon HD 4770

Intro

The GeForce GT 440 3GB has a clock frequency of 594 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 192-bit bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

Compare all that to the Radeon HD 4770, which uses a 40 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory is set to run at a speed of 800 MHz on this particular card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator 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

In theory, the Radeon HD 4770 will be 19% faster than the GeForce GT 440 3GB overall, because of its greater 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 will be a lot (more or less 68%) faster with regards to anisotropic filtering 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

The GeForce GT 440 3GB will be a little bit (about 19%) better at full screen anti-aliasing than the Radeon HD 4770, and able to handle higher screen resolutions better. (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

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 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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a 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 clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum 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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