GeForce GT 240 GDDR5 1GB vs GeForce GTX 970

Intro

Compare all of that to the GeForce GTX 970, which has a clock frequency of 1050 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1664 SPUs, 104 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB		70 Watts
GeForce GTX 970		145 Watts
	Difference: 75 Watts (107%)

Memory Bandwidth

In theory, the GeForce GTX 970 should be 312% faster than the GeForce GT 240 GDDR5 1GB in general, due to its greater data rate. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GT 240 GDDR5 1GB		54400 MB/sec
	Difference: 169600 (312%)

Texel Rate

The GeForce GTX 970 is much (approximately 520%) more effective at AF than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 91600 (520%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 970 is superior to the GeForce GT 240 GDDR5 1GB, by far. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
	Difference: 62800 (1427%)

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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied 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 better the texel rate, 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 chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.