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GeForce 9400 GT 256MB vs GeForce GTX 950

Intro

The GeForce 9400 GT 256MB features a GPU core speed of 550 MHz, and the 256 MB of GDDR2 memory is set to run at 400 MHz through a 128-bit bus. It also is made up of 16 Stream Processors, 8 Texture Address Units, and 4 ROPs.

Compare those specs to the GeForce GTX 950, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1024 MHz. The GDDR5 memory runs at a frequency of 1652 MHz on this particular card. It features 768 SPUs along with 48 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB 50 Watts
GeForce GTX 950 90 Watts
Difference: 40 Watts (80%)

Memory Bandwidth

In theory, the GeForce GTX 950 will be 726% faster than the GeForce 9400 GT 256MB in general, due to its higher data rate. (explain)

GeForce GTX 950 105728 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 92928 (726%)

Texel Rate

The GeForce GTX 950 is a lot (more or less 1017%) better at texture filtering than the GeForce 9400 GT 256MB. (explain)

GeForce GTX 950 49152 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 44752 (1017%)

Pixel Rate

The GeForce GTX 950 will be much (more or less 1389%) faster with regards to full screen anti-aliasing than the GeForce 9400 GT 256MB, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 950 32768 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 30568 (1389%)

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 9400 GT 256MB

Amazon.com

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GeForce GTX 950

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 9400 GT 256MB GeForce GTX 950
Manufacturer nVidia nVidia
Year August 2008 August 2015
Code Name G96a GM206
Memory 256 MB 2048 MB
Core Speed 550 MHz 1024 MHz
Memory Speed 800 MHz 6608 MHz
Power (Max TDP) 50 watts 90 watts
Bandwidth 12800 MB/sec 105728 MB/sec
Texel Rate 4400 Mtexels/sec 49152 Mtexels/sec
Pixel Rate 2200 Mpixels/sec 32768 Mpixels/sec
Unified Shaders 16 768
Texture Mapping Units 8 48
Render Output Units 4 32
Bus Type GDDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 314 million 2940 million
Bus PCIe x16 2.0, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 9400 GT 256MB

Amazon.com

Check prices at:

GeForce GTX 950

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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