GeForce 9400 GT 256MB vs GeForce GTX 960

Intro

Compare all of that to the GeForce GTX 960, which makes use of a 28 nm design. nVidia has clocked the core speed at 1127 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this model. It features 1024 SPUs as well as 64 TAUs 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 960		120 Watts
	Difference: 70 Watts (140%)

Memory Bandwidth

In theory, the GeForce GTX 960 should perform a lot faster than the GeForce 9400 GT 256MB in general. (explain)

GeForce GTX 960		112000 MB/sec
GeForce 9400 GT 256MB		12800 MB/sec
	Difference: 99200 (775%)

Texel Rate

The GeForce GTX 960 will be much (approximately 1539%) more effective at anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

GeForce GTX 960		72128 Mtexels/sec
GeForce 9400 GT 256MB		4400 Mtexels/sec
	Difference: 67728 (1539%)

Pixel Rate

The GeForce GTX 960 will be much (more or less 1539%) faster with regards to full screen anti-aliasing than the GeForce 9400 GT 256MB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 960		36064 Mpixels/sec
GeForce 9400 GT 256MB		2200 Mpixels/sec
	Difference: 33864 (1539%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.