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GeForce 920M vs GeForce 9400 GT 256MB

Intro

The GeForce 920M makes use of a 28 nm design. nVidia has clocked the core speed at 954 MHz. The DDR3 memory works at a frequency of 900 MHz on this specific model. It features 384 SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the GeForce 9400 GT 256MB, which has a core clock speed of 550 MHz and a GDDR2 memory speed of 400 MHz. It also features a 128-bit memory bus, and uses a 65 nm design. It is made up of 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 920M, in theory, should be a little bit faster than the GeForce 9400 GT 256MB overall. (explain)

GeForce 920M 14400 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 920M should be much (more or less 594%) more effective at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce 920M 30528 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 26128 (594%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 920M is the winner, by a large margin. (explain)

GeForce 920M 7632 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 5432 (247%)

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 920M

Amazon.com

Check prices at:

GeForce 9400 GT 256MB

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 920M GeForce 9400 GT 256MB
Manufacturer nVidia nVidia
Year March 12 2015 August 2008
Code Name GK208 G96a
Memory 2048 MB 256 MB
Core Speed 954 MHz 550 MHz
Memory Speed 1800 MHz 800 MHz
Power (Max TDP) (Unknown) watts 50 watts
Bandwidth 14400 MB/sec 12800 MB/sec
Texel Rate 30528 Mtexels/sec 4400 Mtexels/sec
Pixel Rate 7632 Mpixels/sec 2200 Mpixels/sec
Unified Shaders 384 16
Texture Mapping Units 32 8
Render Output Units 8 4
Bus Type DDR3 GDDR2
Bus Width 64-bit 128-bit
Fab Process 28 nm 65 nm
Transistors (Unknown) million 314 million
Bus PCIe 3.0 x16 PCIe x16 2.0, PCI
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the 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 record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 max fill rate.

Display Prices

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GeForce 920M

Amazon.com

Check prices at:

GeForce 9400 GT 256MB

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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