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GeForce 9400 GT 256MB vs GeForce GTX 870M

Intro

The GeForce 9400 GT 256MB has core speeds of 550 MHz on the GPU, and 400 MHz on the 256 MB of GDDR2 RAM. It features 16 SPUs along with 8 TAUs and 4 ROPs.

Compare those specs to the GeForce GTX 870M, which comes with a GPU core clock speed of 941 MHz, and 3072 MB of GDDR5 memory running at 1000 MHz through a 192-bit bus. It also features 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB 50 Watts
GeForce GTX 870M 110 Watts
Difference: 60 Watts (120%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 870M will be 650% quicker than the GeForce 9400 GT 256MB in general, because of its greater data rate. (explain)

GeForce GTX 870M 96000 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 83200 (650%)

Texel Rate

The GeForce GTX 870M should be quite a bit (approximately 2295%) faster with regards to anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce GTX 870M 105392 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 100992 (2295%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 870M is a better choice, and very much so. (explain)

GeForce GTX 870M 22584 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 20384 (927%)

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

Check prices at:

GeForce GTX 870M

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 9400 GT 256MB GeForce GTX 870M
Manufacturer nVidia nVidia
Year August 2008 March 12 2014
Code Name G96a GK104
Memory 256 MB 3072 MB
Core Speed 550 MHz 941 MHz
Memory Speed 800 MHz 4000 MHz
Power (Max TDP) 50 watts 110 watts
Bandwidth 12800 MB/sec 96000 MB/sec
Texel Rate 4400 Mtexels/sec 105392 Mtexels/sec
Pixel Rate 2200 Mpixels/sec 22584 Mpixels/sec
Unified Shaders 16 1344
Texture Mapping Units 8 112
Render Output Units 4 24
Bus Type GDDR2 GDDR5
Bus Width 128-bit 192-bit
Fab Process 65 nm 28 nm
Transistors 314 million (Unknown) million
Bus PCIe x16 2.0, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many 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 9400 GT 256MB

Amazon.com

Check prices at:

GeForce GTX 870M

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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