GeForce GT 240 GDDR5 vs GeForce GTX 950

Intro

Compare those specs to the GeForce GTX 950, which comes with GPU core speed of 1024 MHz, and 2048 MB of GDDR5 RAM set to run at 1652 MHz through a 128-bit bus. It also features 768 Stream Processors, 48 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
GeForce GTX 950		90 Watts
	Difference: 20 Watts (29%)

Memory Bandwidth

The GeForce GTX 950, in theory, should be much faster than the GeForce GT 240 GDDR5 overall. (explain)

GeForce GTX 950		105728 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 51328 (94%)

Texel Rate

The GeForce GTX 950 will be quite a bit (about 179%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 31552 (179%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 950 is a better choice, and very much so. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 28368 (645%)

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 max amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are processed 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in a 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 - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.