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GeForce 8400 GS 512MB vs GeForce GT 440 3GB

Intro

The GeForce 8400 GS 512MB features a core clock frequency of 650 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 64-bit bus, and uses a 80 nm design. It is made up of 16 SPUs, 8 TAUs, and 4 ROPs.

Compare those specifications to the GeForce GT 440 3GB, which comes with GPU clock speed of 594 MHz, and 3072 MB of GDDR3 memory set to run at 900 MHz through a 192-bit bus. It also is made up of 144 SPUs, 24 TAUs, and 24 Raster Operation Units.

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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

Performance-wise, the GeForce GT 440 3GB should theoretically be much better than the GeForce 8400 GS 512MB in general. (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 will be quite a bit (approximately 174%) faster with regards to texture 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

If using high levels of AA is important to you, then the GeForce GT 440 3GB is superior to the GeForce 8400 GS 512MB, by a large margin. (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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to 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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