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GeForce 930M vs GeForce 9400 GT 256MB

Intro

The GeForce 930M has a core clock speed of 928 MHz and a DDR3 memory speed of 900 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare all of that to the GeForce 9400 GT 256MB, which features a core clock speed of 550 MHz and a GDDR2 memory speed of 400 MHz. It also uses a 128-bit memory bus, and makes use of a 65 nm design. It is comprised of 16 SPUs, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 930M, in theory, should perform just a bit faster than the GeForce 9400 GT 256MB overall. (explain)

GeForce 930M 14400 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 930M will be a lot (about 406%) better at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce 930M 22272 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 17872 (406%)

Pixel Rate

The GeForce 930M will be quite a bit (more or less 237%) faster with regards to anti-aliasing than the GeForce 9400 GT 256MB, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce 930M 7424 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 5224 (237%)

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 930M

Amazon.com

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GeForce 9400 GT 256MB

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 930M GeForce 9400 GT 256MB
Manufacturer nVidia nVidia
Year March 12 2015 August 2008
Code Name GM108 G96a
Memory 2048 MB 256 MB
Core Speed 928 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 22272 Mtexels/sec 4400 Mtexels/sec
Pixel Rate 7424 Mpixels/sec 2200 Mpixels/sec
Unified Shaders 384 16
Texture Mapping Units 24 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 (measured in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 930M

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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