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GeForce 8400 GS 512MB vs GeForce GT 440 3GB

Intro

The GeForce 8400 GS 512MB features core clock speeds of 650 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 16 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Compare those specifications to the GeForce GT 440 3GB, which has core clock speeds of 594 MHz on the GPU, and 900 MHz on the 3072 MB of GDDR3 RAM. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
GeForce GT 440 3GB 56 Watts
Difference: 16 Watts (40%)

Memory Bandwidth

The GeForce GT 440 3GB should in theory be much faster than the GeForce 8400 GS 512MB overall. (explain)

GeForce GT 440 3GB 43200 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 36800 (575%)

Texel Rate

The GeForce GT 440 3GB should be quite a bit (more or less 174%) more effective at anisotropic filtering than the GeForce 8400 GS 512MB. (explain)

GeForce GT 440 3GB 14256 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 9056 (174%)

Pixel Rate

The GeForce GT 440 3GB should be quite a bit (more or less 448%) faster with regards to AA than the GeForce 8400 GS 512MB, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GT 440 3GB 14256 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 11656 (448%)

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 8400 GS 512MB

Amazon.com

Check prices at:

GeForce GT 440 3GB

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 8400 GS 512MB GeForce GT 440 3GB
Manufacturer nVidia nVidia
Year June 2007 October 2010
Code Name G86 GF106
Memory 512 MB 3072 MB
Core Speed 650 MHz 594 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 40 watts 56 watts
Bandwidth 6400 MB/sec 43200 MB/sec
Texel Rate 5200 Mtexels/sec 14256 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 14256 Mpixels/sec
Unified Shaders 16 144
Texture Mapping Units 8 24
Render Output Units 4 24
Bus Type DDR2 GDDR3
Bus Width 64-bit 192-bit
Fab Process 80 nm 40 nm
Transistors 210 million 1170 million
Bus PCIe x16, PCI PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Check prices at:

GeForce GT 440 3GB

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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